1 ;;; viper-cmd.el --- Vi command support for Viper
3 ;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 ;; 2005 Free Software Foundation, Inc.
6 ;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
23 ;; Boston, MA 02110-1301, USA.
33 (defvar viper-minibuffer-current-face)
34 (defvar viper-minibuffer-insert-face)
35 (defvar viper-minibuffer-vi-face)
36 (defvar viper-minibuffer-emacs-face)
38 (defvar viper-mode-string)
39 (defvar viper-custom-file-name)
40 (defvar viper--key-maps)
41 (defvar viper--intercept-key-maps)
42 (defvar iso-accents-mode)
44 (defvar quail-current-str)
45 (defvar zmacs-region-stays)
46 (defvar mark-even-if-inactive)
50 ;; loading happens only in non-interactive compilation
51 ;; in order to spare non-viperized emacs from being viperized
54 (let ((load-path (cons (expand-file-name ".") load-path)))
55 (or (featurep 'viper-util)
56 (load "viper-util.el" nil nil 'nosuffix))
57 (or (featurep 'viper-keym)
58 (load "viper-keym.el" nil nil 'nosuffix))
59 (or (featurep 'viper-mous)
60 (load "viper-mous.el" nil nil 'nosuffix))
61 (or (featurep 'viper-macs)
62 (load "viper-macs.el" nil nil 'nosuffix))
63 (or (featurep 'viper-ex)
64 (load "viper-ex.el" nil nil 'nosuffix))
79 ;; These test functions are shamelessly lifted from vip 4.4.2 by Aamod Sane
81 ;; generate test functions
82 ;; given symbol foo, foo-p is the test function, foos is the set of
84 ;; (macroexpand '(viper-test-com-defun foo))
85 ;; (defun foo-p (com) (consp (memq com foos)))
87 (defmacro viper-test-com-defun (name)
88 (let* ((snm (symbol-name name))
89 (nm-p (intern (concat snm "-p")))
90 (nms (intern (concat snm "s"))))
92 (consp (viper-memq-char com ,nms)
95 ;; Variables for defining VI commands
97 ;; Modifying commands that can be prefixes to movement commands
98 (defvar viper-prefix-commands '(?c ?d ?y ?! ?= ?# ?< ?> ?\"))
99 ;; define viper-prefix-command-p
100 (viper-test-com-defun viper-prefix-command)
102 ;; Commands that are pairs eg. dd. r and R here are a hack
103 (defconst viper-charpair-commands '(?c ?d ?y ?! ?= ?< ?> ?r ?R))
104 ;; define viper-charpair-command-p
105 (viper-test-com-defun viper-charpair-command)
107 (defconst viper-movement-commands '(?b ?B ?e ?E ?f ?F ?G ?h ?H ?j ?k ?l
108 ?H ?M ?L ?n ?t ?T ?w ?W ?$ ?%
109 ?^ ?( ?) ?- ?+ ?| ?{ ?} ?[ ?] ?' ?`
110 ?\; ?, ?0 ?? ?/ ?\ ?\C-m
115 ;; define viper-movement-command-p
116 (viper-test-com-defun viper-movement-command)
119 (defconst viper-digit-commands '(?1 ?2 ?3 ?4 ?5 ?6 ?7 ?8 ?9))
121 ;; define viper-digit-command-p
122 (viper-test-com-defun viper-digit-command)
124 ;; Commands that can be repeated by . (dotted)
125 (defconst viper-dotable-commands '(?c ?d ?C ?s ?S ?D ?> ?<))
126 ;; define viper-dotable-command-p
127 (viper-test-com-defun viper-dotable-command)
129 ;; Commands that can follow a #
130 (defconst viper-hash-commands '(?c ?C ?g ?q ?s))
131 ;; define viper-hash-command-p
132 (viper-test-com-defun viper-hash-command)
134 ;; Commands that may have registers as prefix
135 (defconst viper-regsuffix-commands '(?d ?y ?Y ?D ?p ?P ?x ?X))
136 ;; define viper-regsuffix-command-p
137 (viper-test-com-defun viper-regsuffix-command)
139 (defconst viper-vi-commands (append viper-movement-commands
141 viper-dotable-commands
142 viper-charpair-commands
144 viper-prefix-commands
145 viper-regsuffix-commands)
146 "The list of all commands in Vi-state.")
147 ;; define viper-vi-command-p
148 (viper-test-com-defun viper-vi-command)
150 ;; Where viper saves mark. This mark is resurrected by m^
151 (defvar viper-saved-mark nil)
153 ;; Contains user settings for vars affected by viper-set-expert-level function.
154 ;; Not a user option.
155 (defvar viper-saved-user-settings nil)
163 ;; Runs viper-after-change-functions inside after-change-functions
164 (defun viper-after-change-sentinel (beg end len)
165 (run-hook-with-args 'viper-after-change-functions beg end len))
167 ;; Runs viper-before-change-functions inside before-change-functions
168 (defun viper-before-change-sentinel (beg end)
169 (run-hook-with-args 'viper-before-change-functions beg end))
171 (defsubst viper-post-command-sentinel ()
172 (run-hooks 'viper-post-command-hooks)
173 (if (eq viper-current-state 'vi-state)
174 (viper-restore-cursor-color 'after-insert-mode)))
176 (defsubst viper-pre-command-sentinel ()
177 (run-hooks 'viper-pre-command-hooks))
179 ;; Needed so that Viper will be able to figure the last inserted
180 ;; chunk of text with reasonable accuracy.
181 (defsubst viper-insert-state-post-command-sentinel ()
182 (if (and (memq viper-current-state '(insert-state replace-state))
184 (>= (point) viper-insert-point))
185 (setq viper-last-posn-while-in-insert-state (point-marker)))
186 (or (viper-overlay-p viper-replace-overlay)
188 (viper-set-replace-overlay (point-min) (point-min))
189 (viper-hide-replace-overlay)))
190 (if (eq viper-current-state 'insert-state)
191 (let ((has-saved-cursor-color-in-insert-mode
192 (stringp (viper-get-saved-cursor-color-in-insert-mode))))
193 (or has-saved-cursor-color-in-insert-mode
194 (string= (viper-get-cursor-color) viper-insert-state-cursor-color)
195 ;; save current color, if not already saved
196 (viper-save-cursor-color 'before-insert-mode))
197 ;; set insert mode cursor color
198 (viper-change-cursor-color viper-insert-state-cursor-color)))
200 (if (and (memq this-command '(dabbrev-expand hippie-expand))
201 (integerp viper-pre-command-point)
202 (markerp viper-insert-point)
203 (marker-position viper-insert-point)
204 (> viper-insert-point viper-pre-command-point))
205 (viper-move-marker-locally viper-insert-point viper-pre-command-point))
208 (defsubst viper-preserve-cursor-color ()
209 (or (memq this-command '(self-insert-command
210 viper-del-backward-char-in-insert
211 viper-del-backward-char-in-replace
212 viper-delete-backward-char
215 (memq (viper-event-key last-command-event)
216 '(up down left right (meta f) (meta b)
217 (control n) (control p) (control f) (control b)))))
219 (defsubst viper-insert-state-pre-command-sentinel ()
220 (or (viper-preserve-cursor-color)
221 (viper-restore-cursor-color 'after-insert-mode))
222 (if (and (memq this-command '(dabbrev-expand hippie-expand))
223 (markerp viper-insert-point)
224 (marker-position viper-insert-point))
225 (setq viper-pre-command-point (marker-position viper-insert-point))))
227 (defsubst viper-R-state-post-command-sentinel ()
228 ;; Restoring cursor color is needed despite
229 ;; viper-replace-state-pre-command-sentinel: When you jump to another buffer
230 ;; in another frame, the pre-command hook won't change cursor color to
231 ;; default in that other frame. So, if the second frame cursor was red and
232 ;; we set the point outside the replacement region, then the cursor color
233 ;; will remain red. Restoring the default, below, prevents this.
234 (if (and (<= (viper-replace-start) (point))
235 (<= (point) (viper-replace-end)))
236 (viper-change-cursor-color viper-replace-overlay-cursor-color)
237 (viper-restore-cursor-color 'after-replace-mode)
240 ;; to speed up, don't change cursor color before self-insert
241 ;; and common move commands
242 (defsubst viper-replace-state-pre-command-sentinel ()
243 (or (viper-preserve-cursor-color)
244 (viper-restore-cursor-color 'after-replace-mode)))
247 ;; Make sure we don't delete more than needed.
248 ;; This is executed at viper-last-posn-in-replace-region
249 (defsubst viper-trim-replace-chars-to-delete-if-necessary ()
250 (setq viper-replace-chars-to-delete
252 (min viper-replace-chars-to-delete
253 ;; Don't delete more than to the end of repl overlay
254 (viper-chars-in-region
255 (viper-replace-end) viper-last-posn-in-replace-region)
256 ;; point is viper-last-posn-in-replace-region now
257 ;; So, this limits deletion to the end of line
258 (viper-chars-in-region (point) (viper-line-pos 'end))
262 (defun viper-replace-state-post-command-sentinel ()
263 ;; Restoring cursor color is needed despite
264 ;; viper-replace-state-pre-command-sentinel: When one jumps to another buffer
265 ;; in another frame, the pre-command hook won't change cursor color to
266 ;; default in that other frame. So, if the second frame cursor was red and
267 ;; we set the point outside the replacement region, then the cursor color
268 ;; will remain red. Restoring the default, below, fixes this problem.
270 ;; We optimize for some commands, like self-insert-command,
271 ;; viper-delete-backward-char, etc., since they either don't change
272 ;; cursor color or, if they terminate replace mode, the color will be changed
273 ;; in viper-finish-change
274 (or (viper-preserve-cursor-color)
275 (viper-restore-cursor-color 'after-replace-mode))
277 ((eq viper-current-state 'replace-state)
278 ;; delete characters to compensate for inserted chars.
279 (let ((replace-boundary (viper-replace-end)))
281 (goto-char viper-last-posn-in-replace-region)
282 (viper-trim-replace-chars-to-delete-if-necessary)
283 (delete-char viper-replace-chars-to-delete)
284 (setq viper-replace-chars-to-delete 0)
285 ;; terminate replace mode if reached replace limit
286 (if (= viper-last-posn-in-replace-region (viper-replace-end))
287 (viper-finish-change)))
289 (if (viper-pos-within-region
290 (point) (viper-replace-start) replace-boundary)
292 ;; the state may have changed in viper-finish-change above
293 (if (eq viper-current-state 'replace-state)
294 (viper-change-cursor-color viper-replace-overlay-cursor-color))
295 (setq viper-last-posn-in-replace-region (point-marker))))
297 ;; terminate replace mode if changed Viper states.
298 (t (viper-finish-change))))
303 ;; Change state to NEW-STATE---either emacs-state, vi-state, or insert-state.
304 (defun viper-change-state (new-state)
305 ;; Keep viper-post/pre-command-hooks fresh.
306 ;; We remove then add viper-post/pre-command-sentinel since it is very
307 ;; desirable that viper-pre-command-sentinel is the last hook and
308 ;; viper-post-command-sentinel is the first hook.
310 (viper-cond-compile-for-xemacs-or-emacs
313 (make-local-hook 'viper-after-change-functions)
314 (make-local-hook 'viper-before-change-functions)
315 (make-local-hook 'viper-post-command-hooks)
316 (make-local-hook 'viper-pre-command-hooks))
320 (remove-hook 'post-command-hook 'viper-post-command-sentinel)
321 (add-hook 'post-command-hook 'viper-post-command-sentinel)
322 (remove-hook 'pre-command-hook 'viper-pre-command-sentinel)
323 (add-hook 'pre-command-hook 'viper-pre-command-sentinel t)
324 ;; These hooks will be added back if switching to insert/replace mode
325 (remove-hook 'viper-post-command-hooks
326 'viper-insert-state-post-command-sentinel 'local)
327 (remove-hook 'viper-pre-command-hooks
328 'viper-insert-state-pre-command-sentinel 'local)
329 (setq viper-intermediate-command nil)
330 (cond ((eq new-state 'vi-state)
331 (cond ((member viper-current-state '(insert-state replace-state))
333 ;; move viper-last-posn-while-in-insert-state
334 ;; This is a normal hook that is executed in insert/replace
335 ;; states after each command. In Vi/Emacs state, it does
336 ;; nothing. We need to execute it here to make sure that
337 ;; the last posn was recorded when we hit ESC.
338 ;; It may be left unrecorded if the last thing done in
339 ;; insert/repl state was dabbrev-expansion or abbrev
340 ;; expansion caused by hitting ESC
341 (viper-insert-state-post-command-sentinel)
343 (condition-case conds
345 (viper-save-last-insertion
347 viper-last-posn-while-in-insert-state)
348 (if viper-began-as-replace
349 (setq viper-began-as-replace nil)
350 ;; repeat insert commands if numerical arg > 1
352 (viper-repeat-insert-command))))
354 (viper-message-conditions conds)))
356 (if (> (length viper-last-insertion) 0)
357 (viper-push-onto-ring viper-last-insertion
358 'viper-insertion-ring))
360 (if viper-ESC-moves-cursor-back
361 (or (bolp) (viper-beginning-of-field) (backward-char 1))))
365 ((memq new-state '(insert-state replace-state))
366 (if (memq viper-current-state '(emacs-state vi-state))
367 (viper-move-marker-locally 'viper-insert-point (point)))
368 (viper-move-marker-locally
369 'viper-last-posn-while-in-insert-state (point))
370 (add-hook 'viper-post-command-hooks
371 'viper-insert-state-post-command-sentinel t 'local)
372 (add-hook 'viper-pre-command-hooks
373 'viper-insert-state-pre-command-sentinel t 'local))
376 ;; Nothing needs to be done to switch to emacs mode! Just set some
377 ;; variables, which is already done in viper-change-state-to-emacs!
380 ;; always turn off iso-accents-mode in vi-state, or else we won't be able to
381 ;; use the keys `,',^ , as they will do accents instead of Vi actions.
382 (cond ((eq new-state 'vi-state) (viper-set-iso-accents-mode nil));accents off
383 (viper-automatic-iso-accents (viper-set-iso-accents-mode t));accents on
384 (t (viper-set-iso-accents-mode nil)))
385 ;; Always turn off quail mode in vi state
386 (cond ((eq new-state 'vi-state) (viper-set-input-method nil)) ;intl input off
387 (viper-special-input-method (viper-set-input-method t)) ;intl input on
388 (t (viper-set-input-method nil)))
390 (setq viper-current-state new-state)
392 (viper-update-syntax-classes)
393 (viper-normalize-minor-mode-map-alist)
394 (viper-adjust-keys-for new-state)
395 (viper-set-mode-vars-for new-state)
396 (viper-refresh-mode-line)
401 (defun viper-adjust-keys-for (state)
402 "Make necessary adjustments to keymaps before entering STATE."
403 (cond ((memq state '(insert-state replace-state))
404 (if viper-auto-indent
406 (define-key viper-insert-basic-map "\C-m" 'viper-autoindent)
407 (if viper-want-emacs-keys-in-insert
409 (define-key viper-insert-basic-map "\C-j" nil)
411 (define-key viper-insert-basic-map "\C-j" 'viper-autoindent)))
412 (define-key viper-insert-basic-map "\C-m" nil)
413 (define-key viper-insert-basic-map "\C-j" nil))
415 (setq viper-insert-diehard-minor-mode
416 (not viper-want-emacs-keys-in-insert))
418 (if viper-want-ctl-h-help
420 (define-key viper-insert-basic-map "\C-h" 'help-command)
421 (define-key viper-replace-map "\C-h" 'help-command))
422 (define-key viper-insert-basic-map
423 "\C-h" 'viper-del-backward-char-in-insert)
424 (define-key viper-replace-map
425 "\C-h" 'viper-del-backward-char-in-replace))
426 ;; In XEmacs, C-h overrides backspace, so we make sure it doesn't.
427 (define-key viper-insert-basic-map
428 [backspace] 'viper-del-backward-char-in-insert)
429 (define-key viper-replace-map
430 [backspace] 'viper-del-backward-char-in-replace)
431 ) ; end insert/replace case
433 (setq viper-vi-diehard-minor-mode (not viper-want-emacs-keys-in-vi))
434 (if viper-want-ctl-h-help
435 (define-key viper-vi-basic-map "\C-h" 'help-command)
436 (define-key viper-vi-basic-map "\C-h" 'viper-backward-char))
437 ;; In XEmacs, C-h overrides backspace, so we make sure it doesn't.
438 (define-key viper-vi-basic-map [backspace] 'viper-backward-char))
442 ;; Normalizes minor-mode-map-alist by putting Viper keymaps first.
443 ;; This ensures that Viper bindings are in effect, regardless of which minor
444 ;; modes were turned on by the user or by other packages.
445 (defun viper-normalize-minor-mode-map-alist ()
446 (setq viper--intercept-key-maps
448 (cons 'viper-vi-intercept-minor-mode viper-vi-intercept-map)
449 (cons 'viper-insert-intercept-minor-mode viper-insert-intercept-map)
450 (cons 'viper-emacs-intercept-minor-mode viper-emacs-intercept-map)
452 (setq viper--key-maps
453 (list (cons 'viper-vi-minibuffer-minor-mode viper-minibuffer-map)
454 (cons 'viper-vi-local-user-minor-mode viper-vi-local-user-map)
455 (cons 'viper-vi-kbd-minor-mode viper-vi-kbd-map)
456 (cons 'viper-vi-global-user-minor-mode viper-vi-global-user-map)
457 (cons 'viper-vi-state-modifier-minor-mode
459 (cdr (assoc major-mode viper-vi-state-modifier-alist)))
460 (cdr (assoc major-mode viper-vi-state-modifier-alist))
462 (cons 'viper-vi-diehard-minor-mode viper-vi-diehard-map)
463 (cons 'viper-vi-basic-minor-mode viper-vi-basic-map)
464 (cons 'viper-replace-minor-mode viper-replace-map)
465 ;; viper-insert-minibuffer-minor-mode must come after
466 ;; viper-replace-minor-mode
467 (cons 'viper-insert-minibuffer-minor-mode
468 viper-minibuffer-map)
469 (cons 'viper-insert-local-user-minor-mode
470 viper-insert-local-user-map)
471 (cons 'viper-insert-kbd-minor-mode viper-insert-kbd-map)
472 (cons 'viper-insert-global-user-minor-mode
473 viper-insert-global-user-map)
474 (cons 'viper-insert-state-modifier-minor-mode
476 (cdr (assoc major-mode
477 viper-insert-state-modifier-alist)))
478 (cdr (assoc major-mode
479 viper-insert-state-modifier-alist))
481 (cons 'viper-insert-diehard-minor-mode viper-insert-diehard-map)
482 (cons 'viper-insert-basic-minor-mode viper-insert-basic-map)
483 (cons 'viper-emacs-local-user-minor-mode
484 viper-emacs-local-user-map)
485 (cons 'viper-emacs-kbd-minor-mode viper-emacs-kbd-map)
486 (cons 'viper-emacs-global-user-minor-mode
487 viper-emacs-global-user-map)
488 (cons 'viper-emacs-state-modifier-minor-mode
491 (assoc major-mode viper-emacs-state-modifier-alist)))
493 (assoc major-mode viper-emacs-state-modifier-alist))
497 ;; This var is not local in Emacs, so we make it local. It must be local
498 ;; because although the stack of minor modes can be the same for all buffers,
499 ;; the associated *keymaps* can be different. In Viper,
500 ;; viper-vi-local-user-map, viper-insert-local-user-map, and others can have
501 ;; different keymaps for different buffers. Also, the keymaps associated
502 ;; with viper-vi/insert-state-modifier-minor-mode can be different.
503 ;; ***This is needed only in case emulation-mode-map-alists is not defined.
504 ;; In emacs with emulation-mode-map-alists, nothing needs to be done
506 (and (fboundp 'add-to-ordered-list) (boundp 'emulation-mode-map-alists))
507 (set (make-local-variable 'minor-mode-map-alist)
508 (viper-append-filter-alist
509 (append viper--intercept-key-maps viper--key-maps)
510 minor-mode-map-alist)))
515 ;; Viper mode-changing commands and utilities
517 ;; Modifies mode-line-buffer-identification.
518 (defun viper-refresh-mode-line ()
519 (set (make-local-variable 'viper-mode-string)
520 (cond ((eq viper-current-state 'emacs-state) viper-emacs-state-id)
521 ((eq viper-current-state 'vi-state) viper-vi-state-id)
522 ((eq viper-current-state 'replace-state) viper-replace-state-id)
523 ((eq viper-current-state 'insert-state) viper-insert-state-id)))
525 ;; Sets Viper mode string in global-mode-string
526 (force-mode-line-update))
529 ;; Switch from Insert state to Vi state.
530 (defun viper-exit-insert-state ()
532 (viper-change-state-to-vi))
534 (defun viper-set-mode-vars-for (state)
535 "Sets Viper minor mode variables to put Viper's state STATE in effect."
538 (setq viper-vi-minibuffer-minor-mode nil
539 viper-insert-minibuffer-minor-mode nil
540 viper-vi-intercept-minor-mode nil
541 viper-insert-intercept-minor-mode nil
543 viper-vi-local-user-minor-mode nil
544 viper-vi-kbd-minor-mode nil
545 viper-vi-global-user-minor-mode nil
546 viper-vi-state-modifier-minor-mode nil
547 viper-vi-diehard-minor-mode nil
548 viper-vi-basic-minor-mode nil
550 viper-replace-minor-mode nil
552 viper-insert-local-user-minor-mode nil
553 viper-insert-kbd-minor-mode nil
554 viper-insert-global-user-minor-mode nil
555 viper-insert-state-modifier-minor-mode nil
556 viper-insert-diehard-minor-mode nil
557 viper-insert-basic-minor-mode nil
558 viper-emacs-intercept-minor-mode t
559 viper-emacs-local-user-minor-mode t
560 viper-emacs-kbd-minor-mode (not (viper-is-in-minibuffer))
561 viper-emacs-global-user-minor-mode t
562 viper-emacs-state-modifier-minor-mode t
566 (if (eq state 'vi-state) ; adjust for vi-state
568 viper-vi-intercept-minor-mode t
569 viper-vi-minibuffer-minor-mode (viper-is-in-minibuffer)
570 viper-vi-local-user-minor-mode t
571 viper-vi-kbd-minor-mode (not (viper-is-in-minibuffer))
572 viper-vi-global-user-minor-mode t
573 viper-vi-state-modifier-minor-mode t
574 ;; don't let the diehard keymap block command completion
575 ;; and other things in the minibuffer
576 viper-vi-diehard-minor-mode (not
577 (or viper-want-emacs-keys-in-vi
578 (viper-is-in-minibuffer)))
579 viper-vi-basic-minor-mode t
580 viper-emacs-intercept-minor-mode nil
581 viper-emacs-local-user-minor-mode nil
582 viper-emacs-kbd-minor-mode nil
583 viper-emacs-global-user-minor-mode nil
584 viper-emacs-state-modifier-minor-mode nil
587 ;; Insert and Replace states
588 (if (member state '(insert-state replace-state))
590 viper-insert-intercept-minor-mode t
591 viper-replace-minor-mode (eq state 'replace-state)
592 viper-insert-minibuffer-minor-mode (viper-is-in-minibuffer)
593 viper-insert-local-user-minor-mode t
594 viper-insert-kbd-minor-mode (not (viper-is-in-minibuffer))
595 viper-insert-global-user-minor-mode t
596 viper-insert-state-modifier-minor-mode t
597 ;; don't let the diehard keymap block command completion
598 ;; and other things in the minibuffer
599 viper-insert-diehard-minor-mode (not
601 viper-want-emacs-keys-in-insert
602 (viper-is-in-minibuffer)))
603 viper-insert-basic-minor-mode t
604 viper-emacs-intercept-minor-mode nil
605 viper-emacs-local-user-minor-mode nil
606 viper-emacs-kbd-minor-mode nil
607 viper-emacs-global-user-minor-mode nil
608 viper-emacs-state-modifier-minor-mode nil
612 (if (viper-has-face-support-p)
613 (setq viper-minibuffer-current-face
614 (cond ((eq state 'emacs-state) viper-minibuffer-emacs-face)
615 ((eq state 'vi-state) viper-minibuffer-vi-face)
616 ((memq state '(insert-state replace-state))
617 viper-minibuffer-insert-face))))
619 (if (viper-is-in-minibuffer)
620 (viper-set-minibuffer-overlay))
623 ;; This also takes care of the annoying incomplete lines in files.
624 ;; Also, this fixes `undo' to work vi-style for complex commands.
625 (defun viper-change-state-to-vi ()
626 "Change Viper state to Vi."
628 (if (and viper-first-time (not (viper-is-in-minibuffer)))
630 (if overwrite-mode (overwrite-mode -1))
631 (or (viper-overlay-p viper-replace-overlay)
632 (viper-set-replace-overlay (point-min) (point-min)))
633 (viper-hide-replace-overlay)
634 (if abbrev-mode (expand-abbrev))
635 (if (and auto-fill-function (> (current-column) fill-column))
636 (funcall auto-fill-function))
637 ;; don't leave whitespace lines around
638 (if (and (memq last-command
640 viper-open-line viper-Open-line
641 viper-replace-state-exit-cmd))
642 (viper-over-whitespace-line))
643 (indent-to-left-margin))
644 (viper-add-newline-at-eob-if-necessary)
646 (viper-change-state 'vi-state)
648 (viper-restore-cursor-color 'after-insert-mode)
650 ;; Protect against user errors in hooks
651 (condition-case conds
652 (run-hooks 'viper-vi-state-hook)
654 (viper-message-conditions conds)))))
656 (defun viper-change-state-to-insert ()
657 "Change Viper state to Insert."
659 (viper-change-state 'insert-state)
661 (or (viper-overlay-p viper-replace-overlay)
662 (viper-set-replace-overlay (point-min) (point-min)))
663 (viper-hide-replace-overlay)
665 (let ((has-saved-cursor-color-in-insert-mode
666 (stringp (viper-get-saved-cursor-color-in-insert-mode))))
667 (or has-saved-cursor-color-in-insert-mode
668 (string= (viper-get-cursor-color) viper-insert-state-cursor-color)
669 (viper-save-cursor-color 'before-insert-mode))
670 (viper-change-cursor-color viper-insert-state-cursor-color))
672 ;; Protect against user errors in hooks
673 (condition-case conds
674 (run-hooks 'viper-insert-state-hook)
676 (viper-message-conditions conds))))
678 (defsubst viper-downgrade-to-insert ()
679 ;; Protect against user errors in hooks
680 (condition-case conds
681 (run-hooks 'viper-insert-state-hook)
683 (viper-message-conditions conds)))
684 (setq viper-current-state 'insert-state
685 viper-replace-minor-mode nil))
689 ;; Change to replace state. When the end of replacement region is reached,
690 ;; replace state changes to insert state.
691 (defun viper-change-state-to-replace (&optional non-R-cmd)
692 (viper-change-state 'replace-state)
693 ;; Run insert-state-hook
694 (condition-case conds
695 (run-hooks 'viper-insert-state-hook 'viper-replace-state-hook)
697 (viper-message-conditions conds)))
700 (viper-start-replace)
701 ;; 'R' is implemented using Emacs's overwrite-mode
702 (viper-start-R-mode))
706 (defun viper-change-state-to-emacs ()
707 "Change Viper state to Emacs."
709 (or (viper-overlay-p viper-replace-overlay)
710 (viper-set-replace-overlay (point-min) (point-min)))
711 (viper-hide-replace-overlay)
712 (viper-change-state 'emacs-state)
714 ;; Protect agains user errors in hooks
715 (condition-case conds
716 (run-hooks 'viper-emacs-state-hook)
718 (viper-message-conditions conds))))
720 ;; escape to emacs mode termporarily
721 (defun viper-escape-to-emacs (arg &optional events)
722 "Escape to Emacs state from Vi state for one Emacs command.
723 ARG is used as the prefix value for the executed command. If
724 EVENTS is a list of events, which become the beginning of the command."
726 (if (viper= last-command-char ?\\)
727 (message "Switched to EMACS state for the next command..."))
728 (viper-escape-to-state arg events 'emacs-state))
730 ;; escape to Vi mode termporarily
731 (defun viper-escape-to-vi (arg)
732 "Escape from Emacs state to Vi state for one Vi 1-character command.
733 If the Vi command that the user types has a prefix argument, e.g., `d2w', then
734 Vi's prefix argument will be used. Otherwise, the prefix argument passed to
735 `viper-escape-to-vi' is used."
737 (message "Switched to VI state for the next command...")
738 (viper-escape-to-state arg nil 'vi-state))
740 ;; Escape to STATE mode for one Emacs command.
741 (defun viper-escape-to-state (arg events state)
742 ;;(let (com key prefix-arg)
744 ;; this temporarily turns off Viper's minor mode keymaps
745 (viper-set-mode-vars-for state)
746 (viper-normalize-minor-mode-map-alist)
747 (if events (viper-set-unread-command-events events))
749 ;; protect against keyboard quit and other errors
751 (let (viper-vi-kbd-minor-mode
752 viper-insert-kbd-minor-mode
753 viper-emacs-kbd-minor-mode)
757 (key-binding (setq key (viper-read-key-sequence nil))))
758 ;; In case of binding indirection--chase definitions.
759 ;; Have to do it here because we execute this command under
760 ;; different keymaps, so command-execute may not do the
762 (while (vectorp com) (setq com (key-binding com))))
764 ;; Execute command com in the original Viper state, not in state
765 ;; `state'. Otherwise, if we switch buffers while executing the
766 ;; escaped to command, Viper's mode vars will remain those of
767 ;; `state'. When we return to the orig buffer, the bindings will be
769 (viper-set-mode-vars-for viper-current-state)
771 ;; this-command, last-command-char, last-command-event
772 (setq this-command com)
773 (viper-cond-compile-for-xemacs-or-emacs
774 ;; XEmacs represents key sequences as vectors
775 (setq last-command-event
776 (viper-copy-event (viper-seq-last-elt key))
777 last-command-char (event-to-character last-command-event))
778 ;; Emacs represents them as sequences (str or vec)
779 (setq last-command-event
780 (viper-copy-event (viper-seq-last-elt key))
781 last-command-char last-command-event)
785 ;; pretend that current state is the state we excaped to
786 (let ((viper-current-state state))
787 (setq prefix-arg (or prefix-arg arg))
788 (command-execute com)))
792 ;; set state in the new buffer
793 (viper-set-mode-vars-for viper-current-state))
795 ;; This is used in order to allow reading characters according to the input
796 ;; method. The character is read in emacs and inserted into the buffer.
797 ;; If an input method is in effect, this might
798 ;; cause several characters to be combined into one.
799 ;; Also takes care of the iso-accents mode
800 (defun viper-special-read-and-insert-char ()
801 (viper-set-mode-vars-for 'emacs-state)
802 (viper-normalize-minor-mode-map-alist)
803 (if viper-special-input-method
804 (viper-set-input-method t))
805 (if viper-automatic-iso-accents
806 (viper-set-iso-accents-mode t))
808 (let (viper-vi-kbd-minor-mode
809 viper-insert-kbd-minor-mode
810 viper-emacs-kbd-minor-mode
812 (cond ((and viper-special-input-method
814 (fboundp 'quail-input-method))
815 ;; (let ...) is used to restore unread-command-events to the
816 ;; original state. We don't want anything left in there after
817 ;; key translation. (Such left-overs are possible if the user
818 ;; types a regular key.)
819 (let (unread-command-events)
820 ;; The next cmd and viper-set-unread-command-events
821 ;; are intended to prevent the input method
822 ;; from swallowing ^M, ^Q and other special characters
823 (setq ch (read-char))
824 ;; replace ^M with the newline
825 (if (eq ch ?\C-m) (setq ch ?\n))
826 ;; Make sure ^V and ^Q work as quotation chars
827 (if (memq ch '(?\C-v ?\C-q))
828 (setq ch (read-char)))
829 (viper-set-unread-command-events ch)
830 (quail-input-method nil)
832 (if (and ch (string= quail-current-str ""))
834 (insert quail-current-str))
836 (aref quail-current-str
837 (1- (length quail-current-str)))))
839 ((and viper-special-input-method
841 (fboundp 'quail-start-translation))
842 ;; same as above but for XEmacs, which doesn't have
843 ;; quail-input-method
844 (let (unread-command-events)
845 (setq ch (read-char))
846 ;; replace ^M with the newline
847 (if (eq ch ?\C-m) (setq ch ?\n))
848 ;; Make sure ^V and ^Q work as quotation chars
849 (if (memq ch '(?\C-v ?\C-q))
850 (setq ch (read-char)))
851 (viper-set-unread-command-events ch)
852 (quail-start-translation nil)
854 (if (and ch (string= quail-current-str ""))
856 (insert quail-current-str))
858 (aref quail-current-str
859 (1- (length quail-current-str)))))
861 ((and (boundp 'iso-accents-mode) iso-accents-mode)
862 (setq ch (aref (read-key-sequence nil) 0))
863 ;; replace ^M with the newline
864 (if (eq ch ?\C-m) (setq ch ?\n))
865 ;; Make sure ^V and ^Q work as quotation chars
866 (if (memq ch '(?\C-v ?\C-q))
867 (setq ch (aref (read-key-sequence nil) 0)))
870 (setq ch (read-char))
871 ;; replace ^M with the newline
872 (if (eq ch ?\C-m) (setq ch ?\n))
873 ;; Make sure ^V and ^Q work as quotation chars
874 (if (memq ch '(?\C-v ?\C-q))
875 (setq ch (read-char)))
878 (setq last-command-event
879 (viper-copy-event (if viper-xemacs-p
880 (character-to-event ch) ch)))
885 (viper-set-input-method nil)
886 (viper-set-iso-accents-mode nil)
887 (viper-set-mode-vars-for viper-current-state)
891 (defun viper-exec-form-in-vi (form)
892 "Execute FORM in Vi state, regardless of the Ccurrent Vi state."
893 (let ((buff (current-buffer))
895 (viper-set-mode-vars-for 'vi-state)
898 (let (viper-vi-kbd-minor-mode) ; execute without kbd macros
899 (setq result (eval form))
904 (if (not (equal buff (current-buffer))) ; cmd switched buffer
907 (viper-set-mode-vars-for viper-current-state)))
908 (viper-set-mode-vars-for viper-current-state)
911 (defun viper-exec-form-in-emacs (form)
912 "Execute FORM in Emacs, temporarily disabling Viper's minor modes.
913 Similar to viper-escape-to-emacs, but accepts forms rather than keystrokes."
914 (let ((buff (current-buffer))
916 (viper-set-mode-vars-for 'emacs-state)
917 (setq result (eval form))
918 (if (not (equal buff (current-buffer))) ; cmd switched buffer
921 (viper-set-mode-vars-for viper-current-state)))
922 (viper-set-mode-vars-for viper-current-state)
925 ;; This executes the last kbd event in emacs mode. Is used when we want to
926 ;; interpret certain keys directly in emacs (as, for example, in comint mode).
927 (defun viper-exec-key-in-emacs (arg)
929 (viper-escape-to-emacs arg last-command-event))
932 ;; This is needed because minor modes sometimes override essential Viper
933 ;; bindings. By letting Viper know which files these modes are in, it will
934 ;; arrange to reorganize minor-mode-map-alist so that things will work right.
935 (defun viper-harness-minor-mode (load-file)
936 "Familiarize Viper with a minor mode defined in LOAD_FILE.
937 Minor modes that have their own keymaps may overshadow Viper keymaps.
938 This function is designed to make Viper aware of the packages that define
941 (viper-harness-minor-mode load-file)
943 LOAD-FILE is a name of the file where the specific minor mode is defined.
944 Suffixes such as .el or .elc should be stripped."
946 (interactive "sEnter name of the load file: ")
948 (eval-after-load load-file '(viper-normalize-minor-mode-map-alist))
950 ;; Change the default for minor-mode-map-alist each time a harnessed minor
951 ;; mode adds its own keymap to the a-list.
953 (and (fboundp 'add-to-ordered-list) (boundp 'emulation-mode-map-alists))
955 load-file '(setq-default minor-mode-map-alist minor-mode-map-alist)))
959 (defun viper-ESC (arg)
960 "Emulate ESC key in Emacs.
961 Prevents multiple escape keystrokes if viper-no-multiple-ESC is true.
962 If viper-no-multiple-ESC is 'twice double ESC would ding in vi-state.
963 Other ESC sequences are emulated via the current Emacs's major mode
964 keymap. This is more convenient on TTYs, since this won't block
965 function keys such as up,down, etc. ESC will also will also work as
966 a Meta key in this case. When viper-no-multiple-ESC is nil, ESC functions
967 as a Meta key and any number of multiple escapes is allowed."
970 (cond ((and (not viper-no-multiple-ESC) (eq viper-current-state 'vi-state))
971 (setq char (viper-read-char-exclusive))
972 (viper-escape-to-emacs arg (list ?\e char) ))
973 ((and (eq viper-no-multiple-ESC 'twice)
974 (eq viper-current-state 'vi-state))
975 (setq char (viper-read-char-exclusive))
976 (if (= char (string-to-char viper-ESC-key))
978 (viper-escape-to-emacs arg (list ?\e char) )))
982 (defun viper-alternate-Meta-key (arg)
983 "Simulate Emacs Meta key."
985 (sit-for 1) (message "ESC-")
986 (viper-escape-to-emacs arg '(?\e)))
988 (defun viper-toggle-key-action ()
989 "Action bound to `viper-toggle-key'."
991 (if (and (< viper-expert-level 2) (equal viper-toggle-key "\C-z"))
992 (if (viper-window-display-p)
995 (viper-change-state-to-emacs)))
998 ;; Intercept ESC sequences on dumb terminals.
999 ;; Based on the idea contributed by Marcelino Veiga Tuimil <mveiga@dit.upm.es>
1001 ;; Check if last key was ESC and if so try to reread it as a function key.
1002 ;; But only if there are characters to read during a very short time.
1003 ;; Returns the last event, if any.
1004 (defun viper-envelop-ESC-key ()
1005 (let ((event last-input-event)
1008 (if (viper-ESC-event-p event)
1010 ;; Emacs 22.50.8 introduced a bug, which makes even a single ESC into
1011 ;; a fast keyseq. To guard against this, we added a check if there
1012 ;; are other events as well
1013 (if (and (viper-fast-keysequence-p) unread-command-events)
1015 (let (minor-mode-map-alist emulation-mode-map-alists)
1016 (viper-set-unread-command-events event)
1017 (setq keyseq (read-key-sequence nil 'continue-echo))
1019 ;; If keyseq translates into something that still has ESC
1020 ;; at the beginning, separate ESC from the rest of the seq.
1021 ;; In XEmacs we check for events that are keypress meta-key
1022 ;; and convert them into [escape key]
1024 ;; This is needed for the following reason:
1025 ;; If ESC is the first symbol, we interpret it as if the
1026 ;; user typed ESC and then quickly some other symbols.
1027 ;; If ESC is not the first one, then the key sequence
1028 ;; entered was apparently translated into a function key or
1029 ;; something (e.g., one may have
1030 ;; (define-key function-key-map "\e[192z" [f11])
1031 ;; which would translate the escape-sequence generated by
1032 ;; f11 in an xterm window into the symbolic key f11.
1034 ;; If `first-key' is not an ESC event, we make it into the
1035 ;; last-command-event in order to pretend that this key was
1036 ;; pressed. This is needed to allow arrow keys to be bound to
1037 ;; macros. Otherwise, viper-exec-mapped-kbd-macro will think
1038 ;; that the last event was ESC and so it'll execute whatever is
1039 ;; bound to ESC. (Viper macros can't be bound to
1041 (let* ((first-key (elt keyseq 0))
1042 (key-mod (event-modifiers first-key)))
1043 (cond ((and (viper-ESC-event-p first-key)
1044 (not viper-translate-all-ESC-keysequences))
1045 ;; put keys following ESC on the unread list
1046 ;; and return ESC as the key-sequence
1047 (viper-set-unread-command-events (viper-subseq keyseq 1))
1048 (setq last-input-event event
1049 keyseq (if viper-emacs-p
1051 (vector (character-to-event ?\e)))))
1052 ((and viper-xemacs-p
1053 (key-press-event-p first-key)
1054 (equal '(meta) key-mod))
1055 (viper-set-unread-command-events
1057 (character-to-event (event-key first-key)))
1058 (viper-subseq keyseq 1)))
1059 (setq last-input-event event
1060 keyseq (vector (character-to-event ?\e))))
1062 (setq last-command-event
1063 (viper-copy-event first-key)))
1067 ;; this is escape event with nothing after it
1068 ;; put in unread-command-event and then re-read
1069 (viper-set-unread-command-events event)
1070 (setq keyseq (read-key-sequence nil))
1072 ;; not an escape event
1073 (setq keyseq (vector event)))
1078 ;; Listen to ESC key.
1079 ;; If a sequence of keys starting with ESC is issued with very short delays,
1080 ;; interpret these keys in Emacs mode, so ESC won't be interpreted as a Vi key.
1081 (defun viper-intercept-ESC-key ()
1082 "Function that implements ESC key in Viper emulation of Vi."
1084 (let ((cmd (or (key-binding (viper-envelop-ESC-key))
1085 '(lambda () (interactive) (error "")))))
1087 ;; call the actual function to execute ESC (if no other symbols followed)
1088 ;; or the key bound to the ESC sequence (if the sequence was issued
1089 ;; with very short delay between characters).
1090 (if (eq cmd 'viper-intercept-ESC-key)
1092 (cond ((eq viper-current-state 'vi-state)
1094 ((eq viper-current-state 'insert-state)
1095 'viper-exit-insert-state)
1096 ((eq viper-current-state 'replace-state)
1097 'viper-replace-state-exit-cmd)
1098 (t 'viper-change-state-to-vi)
1100 (call-interactively cmd)))
1105 ;; prefix argument for Vi mode
1107 ;; In Vi mode, prefix argument is a dotted pair (NUM . COM) where NUM
1108 ;; represents the numeric value of the prefix argument and COM represents
1109 ;; command prefix such as "c", "d", "m" and "y".
1111 ;; Get value part of prefix-argument ARG.
1112 (defsubst viper-p-val (arg)
1113 (cond ((null arg) 1)
1115 (if (or (null (car arg)) (equal (car arg) '(nil)))
1119 ;; Get raw value part of prefix-argument ARG.
1120 (defsubst viper-P-val (arg)
1121 (cond ((consp arg) (car arg))
1124 ;; Get com part of prefix-argument ARG.
1125 (defsubst viper-getcom (arg)
1126 (cond ((null arg) nil)
1127 ((consp arg) (cdr arg))
1130 ;; Get com part of prefix-argument ARG and modify it.
1131 (defun viper-getCom (arg)
1132 (let ((com (viper-getcom arg)))
1133 (cond ((viper= com ?c) ?c)
1134 ;; Previously, ?c was being converted to ?C, but this prevented
1135 ;; multiline replace regions.
1136 ;;((viper= com ?c) ?C)
1137 ((viper= com ?d) ?D)
1138 ((viper= com ?y) ?Y)
1142 ;; Compute numeric prefix arg value.
1143 ;; Invoked by EVENT-CHAR. COM is the command part obtained so far.
1144 (defun viper-prefix-arg-value (event-char com)
1145 (let ((viper-intermediate-command 'viper-digit-argument)
1147 ;; read while number
1148 (while (and (viper-characterp event-char)
1149 (>= event-char ?0) (<= event-char ?9))
1150 (setq value (+ (* (if (integerp value) value 0) 10) (- event-char ?0)))
1151 (setq event-char (viper-read-event-convert-to-char)))
1153 (setq prefix-arg value)
1154 (if com (setq prefix-arg (cons prefix-arg com)))
1155 (while (eq event-char ?U)
1156 (viper-describe-arg prefix-arg)
1157 (setq event-char (viper-read-event-convert-to-char)))
1159 (if (or com (and (not (eq viper-current-state 'vi-state))
1160 ;; make sure it is a Vi command
1161 (viper-characterp event-char)
1162 (viper-vi-command-p event-char)
1164 ;; If appears to be one of the vi commands,
1165 ;; then execute it with funcall and clear prefix-arg in order to not
1166 ;; confuse subsequent commands
1168 ;; last-command-char is the char we want emacs to think was typed
1169 ;; last. If com is not nil, the viper-digit-argument command was
1170 ;; called from within viper-prefix-arg command, such as `d', `w',
1171 ;; etc., i.e., the user typed, say, d2. In this case, `com' would be
1172 ;; `d', `w', etc. If viper-digit-argument was invoked by
1173 ;; viper-escape-to-vi (which is indicated by the fact that the
1174 ;; current state is not vi-state), then `event-char' represents the
1175 ;; vi command to be executed (e.g., `d', `w', etc). Again,
1176 ;; last-command-char must make emacs believe that this is the command
1178 (cond ((eq event-char 'return) (setq event-char ?\C-m))
1179 ((eq event-char 'delete) (setq event-char ?\C-?))
1180 ((eq event-char 'backspace) (setq event-char ?\C-h))
1181 ((eq event-char 'space) (setq event-char ?\ )))
1182 (setq last-command-char (or com event-char))
1183 (setq func (viper-exec-form-in-vi
1184 `(key-binding (char-to-string ,event-char))))
1185 (funcall func prefix-arg)
1186 (setq prefix-arg nil))
1187 ;; some other command -- let emacs do it in its own way
1188 (viper-set-unread-command-events event-char))
1192 ;; Vi operator as prefix argument."
1193 (defun viper-prefix-arg-com (char value com)
1198 (viper-memq-char char
1199 (list ?c ?d ?y ?! ?< ?> ?= ?# ?r ?R ?\"
1200 viper-buffer-search-char)))
1202 ;; this means that we already have a command character, so we
1203 ;; construct a com list and exit while. however, if char is "
1206 ;; new com is (CHAR . OLDCOM)
1207 (if (viper-memq-char char '(?# ?\")) (error ""))
1208 (setq com (cons char com))
1210 ;; If com is nil we set com as char, and read more. Again, if char is
1211 ;; ", we read the name of register and store it in viper-use-register.
1212 ;; if char is !, =, or #, a complete com is formed so we exit the while
1214 (cond ((viper-memq-char char '(?! ?=))
1216 (setq char (read-char))
1219 ;; read a char and encode it as com
1220 (setq com (+ 128 (read-char)))
1221 (setq char (read-char)))
1223 (let ((reg (read-char)))
1224 (if (viper-valid-register reg)
1225 (setq viper-use-register reg)
1227 (setq char (read-char))))
1230 (setq char (read-char))))))
1233 ;; `com' is a single char, so we construct the command argument
1234 ;; and if `char' is `?', we describe the arg; otherwise
1235 ;; we prepare the command that will be executed at the end.
1237 (setq cmd-info (cons value com))
1238 (while (viper= char ?U)
1239 (viper-describe-arg cmd-info)
1240 (setq char (read-char)))
1241 ;; `char' is a movement cmd, a digit arg cmd, or a register cmd---so we
1242 ;; execute it at the very end
1243 (or (viper-movement-command-p char)
1244 (viper-digit-command-p char)
1245 (viper-regsuffix-command-p char)
1246 (viper= char ?!) ; bang command
1248 (setq cmd-to-exec-at-end
1249 (viper-exec-form-in-vi
1250 `(key-binding (char-to-string ,char)))))
1252 ;; as com is non-nil, this means that we have a command to execute
1253 (if (viper-memq-char (car com) '(?r ?R))
1254 ;; execute apropriate region command.
1255 (let ((char (car com)) (com (cdr com)))
1256 (setq prefix-arg (cons value com))
1257 (if (viper= char ?r)
1258 (viper-region prefix-arg)
1259 (viper-Region prefix-arg))
1261 (setq prefix-arg nil))
1262 ;; otherwise, reset prefix arg and call appropriate command
1263 (setq value (if (null value) 1 value))
1264 (setq prefix-arg nil)
1266 ;; If we change ?C to ?c here, then cc will enter replacement mode
1267 ;; rather than deleting lines. However, it will affect 1 less line than
1268 ;; normal. We decided to not use replacement mode here and follow Vi,
1269 ;; since replacement mode on n full lines can be achieved with nC.
1270 ((equal com '(?c . ?c)) (viper-line (cons value ?C)))
1271 ((equal com '(?d . ?d)) (viper-line (cons value ?D)))
1272 ((equal com '(?d . ?y)) (viper-yank-defun))
1273 ((equal com '(?y . ?y)) (viper-line (cons value ?Y)))
1274 ((equal com '(?< . ?<)) (viper-line (cons value ?<)))
1275 ((equal com '(?> . ?>)) (viper-line (cons value ?>)))
1276 ((equal com '(?! . ?!)) (viper-line (cons value ?!)))
1277 ((equal com '(?= . ?=)) (viper-line (cons value ?=)))
1280 (if cmd-to-exec-at-end
1282 (setq last-command-char char)
1283 (setq last-command-event
1285 (if viper-xemacs-p (character-to-event char) char)))
1287 (funcall cmd-to-exec-at-end cmd-info)
1292 (defun viper-describe-arg (arg)
1294 (setq val (viper-P-val arg)
1295 com (viper-getcom arg))
1298 (message "Value is nil, and command is nil")
1299 (message "Value is nil, and command is `%c'" com))
1301 (message "Value is `%d', and command is nil" val)
1302 (message "Value is `%d', and command is `%c'" val com)))))
1304 (defun viper-digit-argument (arg)
1305 "Begin numeric argument for the next command."
1307 (viper-leave-region-active)
1308 (viper-prefix-arg-value
1309 last-command-char (if (consp arg) (cdr arg) nil)))
1311 (defun viper-command-argument (arg)
1312 "Accept a motion command as an argument."
1314 (let ((viper-intermediate-command 'viper-command-argument))
1316 (viper-prefix-arg-com
1318 (cond ((null arg) nil)
1319 ((consp arg) (car arg))
1320 ((integerp arg) arg)
1321 (t (error viper-InvalidCommandArgument)))
1322 (cond ((null arg) nil)
1323 ((consp arg) (cdr arg))
1324 ((integerp arg) nil)
1325 (t (error viper-InvalidCommandArgument))))
1326 (quit (setq viper-use-register nil)
1327 (signal 'quit nil)))
1328 (viper-deactivate-mark)))
1331 ;; repeat last destructive command
1333 ;; Append region to text in register REG.
1334 ;; START and END are buffer positions indicating what to append.
1335 (defsubst viper-append-to-register (reg start end)
1336 (set-register reg (concat (if (stringp (get-register reg))
1337 (get-register reg) "")
1338 (buffer-substring start end))))
1340 ;; Saves last inserted text for possible use by viper-repeat command.
1341 (defun viper-save-last-insertion (beg end)
1343 (setq viper-last-insertion (buffer-substring beg end))
1345 ;; beg or end marker are somehow screwed up
1346 (setq viper-last-insertion nil)))
1347 (setq viper-last-insertion (buffer-substring beg end))
1348 (or (< (length viper-d-com) 5)
1349 (setcar (nthcdr 4 viper-d-com) viper-last-insertion))
1350 (or (null viper-command-ring)
1351 (ring-empty-p viper-command-ring)
1353 (setcar (nthcdr 4 (viper-current-ring-item viper-command-ring))
1354 viper-last-insertion)
1355 ;; del most recent elt, if identical to the second most-recent
1356 (viper-cleanup-ring viper-command-ring)))
1359 (defsubst viper-yank-last-insertion ()
1360 "Inserts the text saved by the previous viper-save-last-insertion command."
1362 (insert viper-last-insertion)
1366 ;; define functions to be executed
1368 ;; invoked by the `C' command
1369 (defun viper-exec-change (m-com com)
1370 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1371 (set-marker viper-com-point (point) (current-buffer)))
1372 ;; handle C cmd at the eol and at eob.
1373 (if (or (and (eolp) (= viper-com-point (point)))
1374 (= viper-com-point (point-max)))
1376 (insert " ")(backward-char 1)))
1377 (if (= viper-com-point (point))
1378 (viper-forward-char-carefully))
1379 (set-mark viper-com-point)
1380 (if (eq m-com 'viper-next-line-at-bol)
1381 (viper-enlarge-region (mark t) (point)))
1382 (if (< (point) (mark t))
1383 (exchange-point-and-mark))
1384 (if (eq (preceding-char) ?\n)
1385 (viper-backward-char-carefully)) ; give back the newline
1386 (if (eq viper-intermediate-command 'viper-repeat)
1387 (viper-change-subr (mark t) (point))
1388 (viper-change (mark t) (point))
1391 ;; this is invoked by viper-substitute-line
1392 (defun viper-exec-Change (m-com com)
1394 (set-mark viper-com-point)
1395 (viper-enlarge-region (mark t) (point))
1396 (if viper-use-register
1398 (cond ((viper-valid-register viper-use-register '(letter digit))
1400 viper-use-register (mark t) (point) nil))
1401 ((viper-valid-register viper-use-register '(Letter))
1402 (viper-append-to-register
1403 (downcase viper-use-register) (mark t) (point)))
1404 (t (setq viper-use-register nil)
1405 (error viper-InvalidRegister viper-use-register)))
1406 (setq viper-use-register nil)))
1407 (delete-region (mark t) (point)))
1409 (if (eq viper-intermediate-command 'viper-repeat)
1410 (viper-yank-last-insertion)
1411 (viper-change-state-to-insert)
1414 (defun viper-exec-delete (m-com com)
1415 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1416 (set-marker viper-com-point (point) (current-buffer)))
1417 (let (chars-deleted)
1418 (if viper-use-register
1420 (cond ((viper-valid-register viper-use-register '(letter digit))
1422 viper-use-register viper-com-point (point) nil))
1423 ((viper-valid-register viper-use-register '(Letter))
1424 (viper-append-to-register
1425 (downcase viper-use-register) viper-com-point (point)))
1426 (t (setq viper-use-register nil)
1427 (error viper-InvalidRegister viper-use-register)))
1428 (setq viper-use-register nil)))
1430 (if (eq last-command 'd-command) 'kill-region nil))
1431 (setq chars-deleted (abs (- (point) viper-com-point)))
1432 (if (> chars-deleted viper-change-notification-threshold)
1433 (unless (viper-is-in-minibuffer)
1434 (message "Deleted %d characters" chars-deleted)))
1435 (kill-region viper-com-point (point))
1436 (setq this-command 'd-command)
1437 (if viper-ex-style-motion
1438 (if (and (eolp) (not (bolp))) (backward-char 1)))))
1440 (defun viper-exec-Delete (m-com com)
1442 (set-mark viper-com-point)
1443 (viper-enlarge-region (mark t) (point))
1444 (let (lines-deleted)
1445 (if viper-use-register
1447 (cond ((viper-valid-register viper-use-register '(letter digit))
1449 viper-use-register (mark t) (point) nil))
1450 ((viper-valid-register viper-use-register '(Letter))
1451 (viper-append-to-register
1452 (downcase viper-use-register) (mark t) (point)))
1453 (t (setq viper-use-register nil)
1454 (error viper-InvalidRegister viper-use-register)))
1455 (setq viper-use-register nil)))
1457 (if (eq last-command 'D-command) 'kill-region nil))
1458 (setq lines-deleted (count-lines (point) viper-com-point))
1459 (if (> lines-deleted viper-change-notification-threshold)
1460 (unless (viper-is-in-minibuffer)
1461 (message "Deleted %d lines" lines-deleted)))
1462 (kill-region (mark t) (point))
1463 (if (eq m-com 'viper-line) (setq this-command 'D-command)))
1464 (back-to-indentation)))
1467 (defun viper-exec-yank (m-com com)
1468 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1469 (set-marker viper-com-point (point) (current-buffer)))
1471 (if viper-use-register
1473 (cond ((viper-valid-register viper-use-register '(letter digit))
1475 viper-use-register viper-com-point (point) nil))
1476 ((viper-valid-register viper-use-register '(Letter))
1477 (viper-append-to-register
1478 (downcase viper-use-register) viper-com-point (point)))
1479 (t (setq viper-use-register nil)
1480 (error viper-InvalidRegister viper-use-register)))
1481 (setq viper-use-register nil)))
1482 (setq last-command nil)
1483 (copy-region-as-kill viper-com-point (point))
1484 (setq chars-saved (abs (- (point) viper-com-point)))
1485 (if (> chars-saved viper-change-notification-threshold)
1486 (unless (viper-is-in-minibuffer)
1487 (message "Saved %d characters" chars-saved)))
1488 (goto-char viper-com-point)))
1491 (defun viper-exec-Yank (m-com com)
1493 (set-mark viper-com-point)
1494 (viper-enlarge-region (mark t) (point))
1496 (if viper-use-register
1498 (cond ((viper-valid-register viper-use-register '(letter digit))
1500 viper-use-register (mark t) (point) nil))
1501 ((viper-valid-register viper-use-register '(Letter))
1502 (viper-append-to-register
1503 (downcase viper-use-register) (mark t) (point)))
1504 (t (setq viper-use-register nil)
1505 (error viper-InvalidRegister viper-use-register)))
1506 (setq viper-use-register nil)))
1507 (setq last-command nil)
1508 (copy-region-as-kill (mark t) (point))
1509 (setq lines-saved (count-lines (mark t) (point)))
1510 (if (> lines-saved viper-change-notification-threshold)
1511 (unless (viper-is-in-minibuffer)
1512 (message "Saved %d lines" lines-saved)))))
1513 (viper-deactivate-mark)
1514 (goto-char viper-com-point))
1516 (defun viper-exec-bang (m-com com)
1518 (set-mark viper-com-point)
1519 (viper-enlarge-region (mark t) (point))
1520 (exchange-point-and-mark)
1521 (shell-command-on-region
1524 (setq viper-last-shell-com
1525 (viper-read-string-with-history
1528 'viper-shell-history
1529 (car viper-shell-history)
1531 viper-last-shell-com)
1534 (defun viper-exec-equals (m-com com)
1536 (set-mark viper-com-point)
1537 (viper-enlarge-region (mark t) (point))
1538 (if (> (mark t) (point)) (exchange-point-and-mark))
1539 (indent-region (mark t) (point) nil)))
1541 (defun viper-exec-shift (m-com com)
1543 (set-mark viper-com-point)
1544 (viper-enlarge-region (mark t) (point))
1545 (if (> (mark t) (point)) (exchange-point-and-mark))
1546 (indent-rigidly (mark t) (point)
1549 (- viper-shift-width))))
1550 ;; return point to where it was before shift
1551 (goto-char viper-com-point))
1553 ;; this is needed because some commands fake com by setting it to ?r, which
1554 ;; denotes repeated insert command.
1555 (defsubst viper-exec-dummy (m-com com)
1558 (defun viper-exec-buffer-search (m-com com)
1559 (setq viper-s-string
1560 (regexp-quote (buffer-substring (point) viper-com-point)))
1561 (setq viper-s-forward t)
1562 (setq viper-search-history (cons viper-s-string viper-search-history))
1563 (setq viper-intermediate-command 'viper-exec-buffer-search)
1564 (viper-search viper-s-string viper-s-forward 1))
1566 (defvar viper-exec-array (make-vector 128 nil))
1568 ;; Using a dispatch array allows adding functions like buffer search
1569 ;; without affecting other functions. Buffer search can now be bound
1570 ;; to any character.
1572 (aset viper-exec-array ?c 'viper-exec-change)
1573 (aset viper-exec-array ?C 'viper-exec-Change)
1574 (aset viper-exec-array ?d 'viper-exec-delete)
1575 (aset viper-exec-array ?D 'viper-exec-Delete)
1576 (aset viper-exec-array ?y 'viper-exec-yank)
1577 (aset viper-exec-array ?Y 'viper-exec-Yank)
1578 (aset viper-exec-array ?r 'viper-exec-dummy)
1579 (aset viper-exec-array ?! 'viper-exec-bang)
1580 (aset viper-exec-array ?< 'viper-exec-shift)
1581 (aset viper-exec-array ?> 'viper-exec-shift)
1582 (aset viper-exec-array ?= 'viper-exec-equals)
1586 ;; This function is called by various movement commands to execute a
1587 ;; destructive command on the region specified by the movement command. For
1588 ;; instance, if the user types cw, then the command viper-forward-word will
1589 ;; call viper-execute-com to execute viper-exec-change, which eventually will
1590 ;; call viper-change to invoke the replace mode on the region.
1592 ;; The var viper-d-com is set to (M-COM VAL COM REG INSETED-TEXT COMMAND-KEYS)
1593 ;; via a call to viper-set-destructive-command, for later use by viper-repeat.
1594 (defun viper-execute-com (m-com val com)
1595 (let ((reg viper-use-register))
1596 ;; this is the special command `#'
1598 (viper-special-prefix-com (- com 128))
1599 (let ((fn (aref viper-exec-array com)))
1601 (error "%c: %s" com viper-InvalidViCommand)
1602 (funcall fn m-com com))))
1603 (if (viper-dotable-command-p com)
1604 (viper-set-destructive-command
1605 (list m-com val com reg nil nil)))
1609 (defun viper-repeat (arg)
1610 "Re-execute last destructive command.
1611 Use the info in viper-d-com, which has the form
1612 \(com val ch reg inserted-text command-keys\),
1613 where `com' is the command to be re-executed, `val' is the
1614 argument to `com', `ch' is a flag for repeat, and `reg' is optional;
1615 if it exists, it is the name of the register for `com'.
1616 If the prefix argument, ARG, is non-nil, it is used instead of `val'."
1618 (let ((save-point (point)) ; save point before repeating prev cmd
1619 ;; Pass along that we are repeating a destructive command
1620 ;; This tells viper-set-destructive-command not to update
1621 ;; viper-command-ring
1622 (viper-intermediate-command 'viper-repeat))
1623 (if (eq last-command 'viper-undo)
1624 ;; if the last command was viper-undo, then undo-more
1626 ;; otherwise execute the command stored in viper-d-com. if arg is
1627 ;; non-nil its prefix value is used as new prefix value for the command.
1628 (let ((m-com (car viper-d-com))
1629 (val (viper-P-val arg))
1630 (com (nth 2 viper-d-com))
1631 (reg (nth 3 viper-d-com)))
1632 (if (null val) (setq val (nth 1 viper-d-com)))
1633 (if (null m-com) (error "No previous command to repeat"))
1634 (setq viper-use-register reg)
1635 (if (nth 4 viper-d-com) ; text inserted by command
1636 (setq viper-last-insertion (nth 4 viper-d-com)
1637 viper-d-char (nth 4 viper-d-com)))
1638 (funcall m-com (cons val com))
1639 (cond ((and (< save-point (point)) viper-keep-point-on-repeat)
1640 (goto-char save-point)) ; go back to before repeat.
1641 ((and (< save-point (point)) viper-ex-style-editing)
1642 (or (bolp) (backward-char 1))))
1643 (if (and (eolp) (not (bolp)))
1646 (viper-adjust-undo) ; take care of undo
1647 ;; If the prev cmd was rotating the command ring, this means that `.' has
1648 ;; just executed a command from that ring. So, push it on the ring again.
1649 ;; If we are just executing previous command , then don't push viper-d-com
1650 ;; because viper-d-com is not fully constructed in this case (its keys and
1651 ;; the inserted text may be nil). Besides, in this case, the command
1652 ;; executed by `.' is already on the ring.
1653 (if (eq last-command 'viper-display-current-destructive-command)
1654 (viper-push-onto-ring viper-d-com 'viper-command-ring))
1655 (viper-deactivate-mark)
1658 (defun viper-repeat-from-history ()
1659 "Repeat a destructive command from history.
1660 Doesn't change viper-command-ring in any way, so `.' will work as before
1661 executing this command.
1662 This command is supposed to be bound to a two-character Vi macro where
1663 the second character is a digit 0 to 9. The digit indicates which
1664 history command to execute. `<char>0' is equivalent to `.', `<char>1'
1665 invokes the command before that, etc."
1667 (let* ((viper-intermediate-command 'repeating-display-destructive-command)
1668 (idx (cond (viper-this-kbd-macro
1670 (symbol-name (elt viper-this-kbd-macro 1))))
1673 (viper-d-com viper-d-com))
1675 (or (and (numberp num) (<= 0 num) (<= num 9))
1680 "`viper-repeat-from-history' must be invoked as a Vi macro bound to `<key><digit>'")))
1682 (setq viper-d-com (viper-special-ring-rotate1 viper-command-ring -1))
1683 (setq num (1- num)))
1686 (viper-special-ring-rotate1 viper-command-ring 1)
1687 (setq num (1+ num)))
1691 ;; The hash-command. It is invoked interactively by the key sequence #<char>.
1692 ;; The chars that can follow `#' are determined by viper-hash-command-p
1693 (defun viper-special-prefix-com (char)
1694 (cond ((viper= char ?c)
1695 (downcase-region (min viper-com-point (point))
1696 (max viper-com-point (point))))
1698 (upcase-region (min viper-com-point (point))
1699 (max viper-com-point (point))))
1701 (push-mark viper-com-point t)
1702 (viper-global-execute))
1704 (push-mark viper-com-point t)
1705 (viper-quote-region))
1707 (funcall viper-spell-function viper-com-point (point)))
1708 (t (error "#%c: %s" char viper-InvalidViCommand))))
1713 (defun viper-undo ()
1714 "Undo previous change."
1717 (let ((modified (buffer-modified-p))
1718 (before-undo-pt (point-marker))
1719 (after-change-functions after-change-functions)
1720 undo-beg-posn undo-end-posn)
1722 ;; no need to remove this hook, since this var has scope inside a let.
1723 (add-hook 'after-change-functions
1724 '(lambda (beg end len)
1725 (setq undo-beg-posn beg
1726 undo-end-posn (or end beg))))
1730 (setq undo-beg-posn (or undo-beg-posn before-undo-pt)
1731 undo-end-posn (or undo-end-posn undo-beg-posn))
1733 (goto-char undo-beg-posn)
1735 (if (and viper-keep-point-on-undo
1736 (pos-visible-in-window-p before-undo-pt))
1738 (push-mark (point-marker) t)
1739 (viper-sit-for-short 300)
1740 (goto-char undo-end-posn)
1741 (viper-sit-for-short 300)
1742 (if (and (> (viper-chars-in-region undo-beg-posn before-undo-pt) 1)
1743 (> (viper-chars-in-region undo-end-posn before-undo-pt) 1))
1744 (goto-char before-undo-pt)
1745 (goto-char undo-beg-posn)))
1746 (push-mark before-undo-pt t))
1747 (if (and (eolp) (not (bolp))) (backward-char 1))
1748 (if (not modified) (set-buffer-modified-p t)))
1749 (setq this-command 'viper-undo))
1751 ;; Continue undoing previous changes.
1752 (defun viper-undo-more ()
1753 (message "undo more!")
1757 (message "No further undo information in this buffer")))
1758 (if (and (eolp) (not (bolp))) (backward-char 1))
1759 (setq this-command 'viper-undo))
1761 ;; The following two functions are used to set up undo properly.
1762 ;; In VI, unlike Emacs, if you open a line, say, and add a bunch of lines,
1763 ;; they are undone all at once.
1764 (defun viper-adjust-undo ()
1765 (if viper-undo-needs-adjustment
1766 (let ((inhibit-quit t)
1768 (setq viper-undo-needs-adjustment nil)
1769 (if (listp buffer-undo-list)
1770 (if (setq tmp (memq viper-buffer-undo-list-mark buffer-undo-list))
1772 (setq tmp2 (cdr tmp)) ; the part after mark
1774 ;; cut tail from buffer-undo-list temporarily by direct
1775 ;; manipulation with pointers in buffer-undo-list
1778 (setq buffer-undo-list (delq nil buffer-undo-list))
1779 (setq buffer-undo-list
1780 (delq viper-buffer-undo-list-mark buffer-undo-list))
1781 ;; restore tail of buffer-undo-list
1782 (setq buffer-undo-list (nconc buffer-undo-list tmp2)))
1783 (setq buffer-undo-list (delq nil buffer-undo-list)))))
1787 (defun viper-set-complex-command-for-undo ()
1788 (if (listp buffer-undo-list)
1789 (if (not viper-undo-needs-adjustment)
1790 (let ((inhibit-quit t))
1791 (setq buffer-undo-list
1792 (cons viper-buffer-undo-list-mark buffer-undo-list))
1793 (setq viper-undo-needs-adjustment t)))))
1798 (defun viper-display-current-destructive-command ()
1799 (let ((text (nth 4 viper-d-com))
1800 (keys (nth 5 viper-d-com))
1803 (setq this-command 'viper-display-current-destructive-command)
1805 (message " `.' runs %s%s"
1806 (concat "`" (viper-array-to-string keys) "'")
1807 (viper-abbreviate-string
1808 (viper-cond-compile-for-xemacs-or-emacs
1809 (replace-in-string ; xemacs
1810 (cond ((characterp text) (char-to-string text))
1811 ((stringp text) text)
1817 " inserting `" "'" " ......."))
1821 ;; don't change viper-d-com if it was viper-repeat command invoked with `.'
1822 ;; or in some other way (non-interactively).
1823 (defun viper-set-destructive-command (list)
1824 (or (eq viper-intermediate-command 'viper-repeat)
1826 (setq viper-d-com list)
1827 (setcar (nthcdr 5 viper-d-com)
1828 (viper-array-to-string (if (arrayp viper-this-command-keys)
1829 viper-this-command-keys
1830 (this-command-keys))))
1831 (viper-push-onto-ring viper-d-com 'viper-command-ring)))
1832 (setq viper-this-command-keys nil))
1835 (defun viper-prev-destructive-command (next)
1836 "Find previous destructive command in the history of destructive commands.
1837 With prefix argument, find next destructive command."
1839 (let (cmd viper-intermediate-command)
1840 (if (eq last-command 'viper-display-current-destructive-command)
1841 ;; repeated search through command history
1842 (setq viper-intermediate-command
1843 'repeating-display-destructive-command)
1844 ;; first search through command history--set temp ring
1845 (setq viper-temp-command-ring (copy-list viper-command-ring)))
1847 (viper-special-ring-rotate1 viper-temp-command-ring 1)
1848 (viper-special-ring-rotate1 viper-temp-command-ring -1)))
1851 (setq viper-d-com cmd))
1852 (viper-display-current-destructive-command)))
1855 (defun viper-next-destructive-command ()
1856 "Find next destructive command in the history of destructive commands."
1858 (viper-prev-destructive-command 'next))
1861 (defun viper-insert-prev-from-insertion-ring (arg)
1862 "Cycle through insertion ring in the direction of older insertions.
1863 Undoes previous insertion and inserts new.
1864 With prefix argument, cycles in the direction of newer elements.
1865 In minibuffer, this command executes whatever the invocation key is bound
1866 to in the global map, instead of cycling through the insertion ring."
1868 (let (viper-intermediate-command)
1869 (if (eq last-command 'viper-insert-from-insertion-ring)
1870 (progn ; repeated search through insertion history
1871 (setq viper-intermediate-command 'repeating-insertion-from-ring)
1872 (if (eq viper-current-state 'replace-state)
1874 (if viper-last-inserted-string-from-insertion-ring
1875 (backward-delete-char
1876 (length viper-last-inserted-string-from-insertion-ring))))
1878 ;;first search through insertion history
1879 (setq viper-temp-insertion-ring (copy-list viper-insertion-ring)))
1880 (setq this-command 'viper-insert-from-insertion-ring)
1881 ;; so that things will be undone properly
1882 (setq buffer-undo-list (cons nil buffer-undo-list))
1883 (setq viper-last-inserted-string-from-insertion-ring
1884 (viper-special-ring-rotate1 viper-temp-insertion-ring (if arg 1 -1)))
1886 ;; this change of viper-intermediate-command must come after
1887 ;; viper-special-ring-rotate1, so that the ring will rotate, but before the
1889 (setq viper-intermediate-command nil)
1890 (if viper-last-inserted-string-from-insertion-ring
1891 (insert viper-last-inserted-string-from-insertion-ring))
1894 (defun viper-insert-next-from-insertion-ring ()
1895 "Cycle through insertion ring in the direction of older insertions.
1896 Undo previous insertion and inserts new."
1898 (viper-insert-prev-from-insertion-ring 'next))
1902 ;; some region utilities
1904 ;; If at the last line of buffer, add \\n before eob, if newline is missing.
1905 (defun viper-add-newline-at-eob-if-necessary ()
1908 ;; make sure all lines end with newline, unless in the minibuffer or
1909 ;; when requested otherwise (require-final-newline is nil)
1912 require-final-newline
1913 (not (viper-is-in-minibuffer))
1914 (not buffer-read-only))
1917 (defun viper-yank-defun ()
1919 (copy-region-as-kill (point) (mark t)))
1921 ;; Enlarge region between BEG and END.
1922 (defun viper-enlarge-region (beg end)
1923 (or beg (setq beg end)) ; if beg is nil, set to end
1924 (or end (setq end beg)) ; if end is nil, set to beg
1927 (progn (goto-char beg) (set-mark end))
1931 (exchange-point-and-mark)
1932 (if (or (not (eobp)) (not (bolp))) (forward-line 1))
1933 (if (not (eobp)) (beginning-of-line))
1934 (if (> beg end) (exchange-point-and-mark)))
1937 ;; Quote region by each line with a user supplied string.
1938 (defun viper-quote-region ()
1939 (let ((quote-str viper-quote-string)
1940 (donot-change-dafault t))
1942 (viper-read-string-with-history
1945 'viper-quote-region-history
1946 (cond ((string-match "tex.*-mode" (symbol-name major-mode)) "%%")
1947 ((string-match "java.*-mode" (symbol-name major-mode)) "//")
1948 ((string-match "perl.*-mode" (symbol-name major-mode)) "#")
1949 ((string-match "lisp.*-mode" (symbol-name major-mode)) ";;")
1950 ((memq major-mode '(c-mode cc-mode c++-mode)) "//")
1951 ((memq major-mode '(sh-mode shell-mode)) "#")
1952 (t (setq donot-change-dafault nil)
1954 (or donot-change-dafault
1955 (setq viper-quote-string quote-str))
1956 (viper-enlarge-region (point) (mark t))
1957 (if (> (point) (mark t)) (exchange-point-and-mark))
1961 (while (and (< (point) (mark t)) (bolp))
1966 ;; Tells whether BEG is on the same line as END.
1967 ;; If one of the args is nil, it'll return nil.
1968 (defun viper-same-line (beg end)
1969 (let ((selective-display nil)
1972 (if (and beg end (> beg end))
1977 (cond ((or (> beg (point-max)) (> end (point-max))) ; out of range
1980 ;; This 'if' is needed because Emacs treats the next empty line
1981 ;; as part of the previous line.
1982 (if (= (viper-line-pos 'start) end)
1984 (<= (+ incr (count-lines beg end)) 1))))
1988 ;; Check if the string ends with a newline.
1989 (defun viper-end-with-a-newline-p (string)
1990 (or (string= string "")
1991 (= (viper-seq-last-elt string) ?\n)))
1993 (defun viper-tmp-insert-at-eob (msg)
1994 (let ((savemax (point-max)))
1998 (goto-char savemax) (delete-region (point) (point-max))
2003 ;;; Minibuffer business
2005 (defsubst viper-set-minibuffer-style ()
2006 (add-hook 'minibuffer-setup-hook 'viper-minibuffer-setup-sentinel)
2007 (add-hook 'post-command-hook 'viper-minibuffer-post-command-hook))
2010 (defun viper-minibuffer-setup-sentinel ()
2011 (let ((hook (if viper-vi-style-in-minibuffer
2012 'viper-change-state-to-insert
2013 'viper-change-state-to-emacs)))
2014 ;; making buffer-local variables so that normal buffers won't affect the
2015 ;; minibuffer and vice versa. Otherwise, command arguments will affect
2016 ;; minibuffer ops and insertions from the minibuffer will change those in
2017 ;; the normal buffers
2018 (make-local-variable 'viper-d-com)
2019 (make-local-variable 'viper-last-insertion)
2020 (make-local-variable 'viper-command-ring)
2021 (setq viper-d-com nil
2022 viper-last-insertion nil
2023 viper-command-ring nil)
2027 ;; Thie is a temp hook that uses free variables init-message and initial.
2028 ;; A dirty feature, but it is the simplest way to have it do the right thing.
2029 ;; The INIT-MESSAGE and INITIAL vars come from the scope set by
2030 ;; viper-read-string-with-history
2031 (defun viper-minibuffer-standard-hook ()
2032 (if (stringp init-message)
2033 (viper-tmp-insert-at-eob init-message))
2034 (if (stringp initial)
2036 ;; don't wait if we have unread events or in kbd macro
2037 (or unread-command-events
2040 (if (fboundp 'minibuffer-prompt-end)
2041 (delete-region (minibuffer-prompt-end) (point-max))
2045 (defsubst viper-minibuffer-real-start ()
2046 (if (fboundp 'minibuffer-prompt-end)
2047 (minibuffer-prompt-end)
2050 (defun viper-minibuffer-post-command-hook()
2051 (when (active-minibuffer-window)
2052 (when (< (point) (viper-minibuffer-real-start))
2053 (goto-char (viper-minibuffer-real-start)))))
2056 ;; Interpret last event in the local map first; if fails, use exit-minibuffer.
2057 ;; Run viper-minibuffer-exit-hook before exiting.
2058 (defun viper-exit-minibuffer ()
2059 "Exit minibuffer Viper way."
2062 (setq command (local-key-binding (char-to-string last-command-char)))
2063 (run-hooks 'viper-minibuffer-exit-hook)
2065 (command-execute command)
2066 (exit-minibuffer))))
2069 (defcustom viper-smart-suffix-list
2070 '("" "tex" "c" "cc" "C" "java" "el" "html" "htm" "xml"
2071 "pl" "flr" "P" "p" "h" "H")
2072 "*List of suffixes that Viper tries to append to filenames ending with a `.'.
2073 This is useful when the current directory contains files with the same
2074 prefix and many different suffixes. Usually, only one of the suffixes
2075 represents an editable file. However, file completion will stop at the `.'
2076 The smart suffix feature lets you hit RET in such a case, and Viper will
2077 select the appropriate suffix.
2079 Suffixes are tried in the order given and the first suffix for which a
2080 corresponding file exists is selected. If no file exists for any of the
2081 suffixes, the user is asked to confirm.
2083 To turn this feature off, set this variable to nil."
2084 :type '(repeat string)
2088 ;; Try to add a suitable suffix to files whose name ends with a `.'
2089 ;; Useful when the user hits RET on a non-completed file name.
2090 ;; Used as a minibuffer exit hook in read-file-name
2091 (defun viper-file-add-suffix ()
2093 (len (length viper-smart-suffix-list))
2094 (file (buffer-substring-no-properties
2095 (viper-minibuffer-real-start) (point-max)))
2097 (goto-char (point-max))
2098 (if (and viper-smart-suffix-list (string-match "\\.$" file))
2100 (while (and (not found) (< count len))
2101 (setq suff (nth count viper-smart-suffix-list)
2104 (format "%s%s" (substitute-in-file-name file) suff))
2111 (viper-tmp-insert-at-eob " [Please complete file name]")
2113 (while (not (memq cmd
2114 '(exit-minibuffer viper-exit-minibuffer)))
2116 (key-binding (setq key (read-key-sequence nil))))
2117 (cond ((eq cmd 'self-insert-command)
2118 (viper-cond-compile-for-xemacs-or-emacs
2119 (insert (events-to-keys key)) ; xemacs
2120 (insert key) ; emacs
2122 ((memq cmd '(exit-minibuffer viper-exit-minibuffer))
2124 (t (command-execute cmd)))
2129 (defun viper-minibuffer-trim-tail ()
2130 "Delete junk at the end of the first line of the minibuffer input.
2131 Remove this function from `viper-minibuffer-exit-hook', if this causes
2133 (if (viper-is-in-minibuffer)
2135 (goto-char (viper-minibuffer-real-start))
2137 (delete-region (point) (point-max)))))
2140 ;;; Reading string with history
2142 (defun viper-read-string-with-history (prompt &optional initial
2143 history-var default keymap
2145 ;; Read string, prompting with PROMPT and inserting the INITIAL
2146 ;; value. Uses HISTORY-VAR. DEFAULT is the default value to accept if the
2147 ;; input is an empty string.
2148 ;; Default value is displayed until the user types something in the
2150 ;; KEYMAP is used, if given, instead of minibuffer-local-map.
2151 ;; INIT-MESSAGE is the message temporarily displayed after entering the
2153 (let ((minibuffer-setup-hook
2154 ;; stolen from add-hook
2156 (if (boundp 'minibuffer-setup-hook)
2157 minibuffer-setup-hook
2160 'viper-minibuffer-standard-hook
2161 (if (or (not (listp old)) (eq (car old) 'lambda))
2167 (setq keymap (or keymap minibuffer-local-map)
2168 initial (or initial "")
2169 temp-msg (if default
2170 (format "(default %s) " default)
2173 (setq viper-incomplete-ex-cmd nil)
2174 (setq val (read-from-minibuffer prompt
2175 (concat temp-msg initial val padding)
2176 keymap nil history-var))
2177 (setq minibuffer-setup-hook nil
2178 padding (viper-array-to-string (this-command-keys))
2180 ;; the following tries to be smart about what to put in history
2181 (if (not (string= val (car (eval history-var))))
2182 (set history-var (cons val (eval history-var))))
2183 (if (or (string= (nth 0 (eval history-var)) (nth 1 (eval history-var)))
2184 (string= (nth 0 (eval history-var)) ""))
2185 (set history-var (cdr (eval history-var))))
2186 ;; If the user enters nothing but the prev cmd wasn't viper-ex,
2187 ;; viper-command-argument, or `! shell-command', this probably means
2188 ;; that the user typed something then erased. Return "" in this case, not
2189 ;; the default---the default is too confusing in this case.
2190 (cond ((and (string= val "")
2191 (not (string= prompt "!")) ; was a `! shell-command'
2192 (not (memq last-command
2194 viper-command-argument
2198 ((string= val "") (or default ""))
2204 ;; insertion commands
2206 ;; Called when state changes from Insert Vi command mode.
2207 ;; Repeats the insertion command if Insert state was entered with prefix
2209 (defun viper-repeat-insert-command ()
2210 (let ((i-com (car viper-d-com))
2211 (val (nth 1 viper-d-com))
2212 (char (nth 2 viper-d-com)))
2213 (if (and val (> val 1)) ; first check that val is non-nil
2215 (setq viper-d-com (list i-com (1- val) ?r nil nil nil))
2217 (setq viper-d-com (list i-com val char nil nil nil))
2220 (defun viper-insert (arg)
2221 "Insert before point."
2223 (viper-set-complex-command-for-undo)
2224 (let ((val (viper-p-val arg))
2225 ;;(com (viper-getcom arg))
2227 (viper-set-destructive-command (list 'viper-insert val ?r nil nil nil))
2228 (if (eq viper-intermediate-command 'viper-repeat)
2229 (viper-loop val (viper-yank-last-insertion))
2230 (viper-change-state-to-insert))))
2232 (defun viper-append (arg)
2233 "Append after point."
2235 (viper-set-complex-command-for-undo)
2236 (let ((val (viper-p-val arg))
2237 ;;(com (viper-getcom arg))
2239 (viper-set-destructive-command (list 'viper-append val ?r nil nil nil))
2240 (if (not (eolp)) (forward-char))
2241 (if (eq viper-intermediate-command 'viper-repeat)
2242 (viper-loop val (viper-yank-last-insertion))
2243 (viper-change-state-to-insert))))
2245 (defun viper-Append (arg)
2246 "Append at end of line."
2248 (viper-set-complex-command-for-undo)
2249 (let ((val (viper-p-val arg))
2250 ;;(com (viper-getcom arg))
2252 (viper-set-destructive-command (list 'viper-Append val ?r nil nil nil))
2254 (if (eq viper-intermediate-command 'viper-repeat)
2255 (viper-loop val (viper-yank-last-insertion))
2256 (viper-change-state-to-insert))))
2258 (defun viper-Insert (arg)
2259 "Insert before first non-white."
2261 (viper-set-complex-command-for-undo)
2262 (let ((val (viper-p-val arg))
2263 ;;(com (viper-getcom arg))
2265 (viper-set-destructive-command (list 'viper-Insert val ?r nil nil nil))
2266 (back-to-indentation)
2267 (if (eq viper-intermediate-command 'viper-repeat)
2268 (viper-loop val (viper-yank-last-insertion))
2269 (viper-change-state-to-insert))))
2271 (defun viper-open-line (arg)
2274 (viper-set-complex-command-for-undo)
2275 (let ((val (viper-p-val arg))
2276 ;;(com (viper-getcom arg))
2278 (viper-set-destructive-command (list 'viper-open-line val ?r nil nil nil))
2279 (let ((col (current-indentation)))
2280 (if (eq viper-intermediate-command 'viper-repeat)
2284 (viper-indent-line col)
2285 (viper-yank-last-insertion))
2288 (viper-indent-line col)
2289 (viper-change-state-to-insert)))))
2291 (defun viper-Open-line (arg)
2294 (viper-set-complex-command-for-undo)
2295 (let ((val (viper-p-val arg))
2296 ;;(com (viper-getcom arg))
2298 (viper-set-destructive-command (list 'viper-Open-line val ?r nil nil nil))
2299 (let ((col (current-indentation)))
2300 (if (eq viper-intermediate-command 'viper-repeat)
2304 (viper-indent-line col)
2305 (viper-yank-last-insertion))
2308 (viper-indent-line col)
2309 (viper-change-state-to-insert)))))
2311 (defun viper-open-line-at-point (arg)
2312 "Open line at point."
2314 (viper-set-complex-command-for-undo)
2315 (let ((val (viper-p-val arg))
2316 ;;(com (viper-getcom arg))
2318 (viper-set-destructive-command
2319 (list 'viper-open-line-at-point val ?r nil nil nil))
2320 (if (eq viper-intermediate-command 'viper-repeat)
2323 (viper-yank-last-insertion))
2325 (viper-change-state-to-insert))))
2328 (defun viper-substitute (arg)
2329 "Substitute characters."
2331 (let ((val (viper-p-val arg))
2332 ;;(com (viper-getcom arg))
2336 (if (eq viper-intermediate-command 'viper-repeat)
2337 (viper-change-subr (mark t) (point))
2338 (viper-change (mark t) (point)))
2339 ;; com is set to ?r when we repeat this comand with dot
2340 (viper-set-destructive-command (list 'viper-substitute val ?r nil nil nil))
2343 ;; Command bound to S
2344 (defun viper-substitute-line (arg)
2347 (viper-set-complex-command-for-undo)
2348 (viper-line (cons arg ?C)))
2350 ;; Prepare for replace
2351 (defun viper-start-replace ()
2352 (setq viper-began-as-replace t
2353 viper-sitting-in-replace t
2354 viper-replace-chars-to-delete 0)
2356 'viper-after-change-functions 'viper-replace-mode-spy-after t 'local)
2358 'viper-before-change-functions 'viper-replace-mode-spy-before t 'local)
2359 ;; this will get added repeatedly, but no harm
2360 (add-hook 'after-change-functions 'viper-after-change-sentinel t)
2361 (add-hook 'before-change-functions 'viper-before-change-sentinel t)
2362 (viper-move-marker-locally
2363 'viper-last-posn-in-replace-region (viper-replace-start))
2365 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel
2368 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t 'local)
2369 ;; guard against a smartie who switched from R-replace to normal replace
2371 'viper-post-command-hooks 'viper-R-state-post-command-sentinel 'local)
2372 (if overwrite-mode (overwrite-mode -1))
2376 (defun viper-replace-mode-spy-before (beg end)
2377 (setq viper-replace-region-chars-deleted (viper-chars-in-region beg end))
2380 ;; Invoked as an after-change-function to calculate how many chars have to be
2381 ;; deleted. This function may be called several times within a single command,
2382 ;; if this command performs several separate buffer changes. Therefore, if
2383 ;; adds up the number of chars inserted and subtracts the number of chars
2385 (defun viper-replace-mode-spy-after (beg end length)
2386 (if (memq viper-intermediate-command
2387 '(dabbrev-expand hippie-expand repeating-insertion-from-ring))
2388 ;; Take special care of text insertion from insertion ring inside
2389 ;; replacement overlays.
2391 (setq viper-replace-chars-to-delete 0)
2392 (viper-move-marker-locally
2393 'viper-last-posn-in-replace-region (point)))
2395 (let* ((real-end (min end (viper-replace-end)))
2396 (column-shift (- (save-excursion (goto-char real-end)
2398 (save-excursion (goto-char beg)
2403 (setq chars-deleted viper-replace-region-chars-deleted))
2404 (setq viper-replace-region-chars-deleted 0)
2405 (setq viper-replace-chars-to-delete
2406 (+ viper-replace-chars-to-delete
2408 ;; if column shift is bigger, due to a TAB insertion, take
2409 ;; column-shift instead of the number of inserted chars
2410 (max (viper-chars-in-region beg real-end)
2411 ;; This test accounts for Chinese/Japanese/... chars,
2412 ;; which occupy 2 columns instead of one. If we use
2413 ;; column-shift here, we may delete two chars instead of
2414 ;; one when the user types one Chinese character.
2415 ;; Deleting two would be OK, if they were European chars,
2416 ;; but it is not OK if they are Chinese chars.
2417 ;; Since it is hard to
2418 ;; figure out which characters are being deleted in any
2419 ;; given region, we decided to treat Eastern and European
2420 ;; characters equally, even though Eastern chars may
2421 ;; occupy more columns.
2422 (if (memq this-command '(self-insert-command
2423 quoted-insert viper-insert-tab))
2426 ;; the number of deleted chars
2429 (viper-move-marker-locally
2430 'viper-last-posn-in-replace-region
2431 (max (if (> end (viper-replace-end)) (viper-replace-end) end)
2432 (or (marker-position viper-last-posn-in-replace-region)
2433 (viper-replace-start))
2439 ;; Delete stuff between viper-last-posn-in-replace-region and the end of
2440 ;; viper-replace-overlay-marker, if viper-last-posn-in-replace-region is within
2441 ;; the overlay and current point is before the end of the overlay.
2442 ;; Don't delete anything if current point is past the end of the overlay.
2443 (defun viper-finish-change ()
2445 'viper-after-change-functions 'viper-replace-mode-spy-after 'local)
2447 'viper-before-change-functions 'viper-replace-mode-spy-before 'local)
2449 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel 'local)
2451 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel 'local)
2452 (viper-restore-cursor-color 'after-replace-mode)
2453 (setq viper-sitting-in-replace nil) ; just in case we'll need to know it
2455 (if (and viper-replace-overlay
2456 (viper-pos-within-region viper-last-posn-in-replace-region
2457 (viper-replace-start)
2458 (viper-replace-end))
2459 (< (point) (viper-replace-end)))
2461 viper-last-posn-in-replace-region (viper-replace-end))))
2463 (if (eq viper-current-state 'replace-state)
2464 (viper-downgrade-to-insert))
2465 ;; replace mode ended => nullify viper-last-posn-in-replace-region
2466 (viper-move-marker-locally 'viper-last-posn-in-replace-region nil)
2467 (viper-hide-replace-overlay)
2468 (viper-refresh-mode-line)
2469 (viper-put-string-on-kill-ring viper-last-replace-region)
2472 ;; Make STRING be the first element of the kill ring.
2473 (defun viper-put-string-on-kill-ring (string)
2474 (setq kill-ring (cons string kill-ring))
2475 (if (> (length kill-ring) kill-ring-max)
2476 (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil))
2477 (setq kill-ring-yank-pointer kill-ring))
2479 (defun viper-finish-R-mode ()
2481 'viper-post-command-hooks 'viper-R-state-post-command-sentinel 'local)
2483 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel 'local)
2484 (viper-downgrade-to-insert))
2486 (defun viper-start-R-mode ()
2487 ;; Leave arg as 1, not t: XEmacs insists that it must be a pos number
2490 'viper-post-command-hooks 'viper-R-state-post-command-sentinel t 'local)
2492 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t 'local)
2493 ;; guard against a smartie who switched from R-replace to normal replace
2495 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel 'local)
2500 (defun viper-replace-state-exit-cmd ()
2501 "Binding for keys that cause Replace state to switch to Vi or to Insert.
2502 These keys are ESC, RET, and LineFeed"
2504 (if overwrite-mode ; if in replace mode invoked via 'R'
2505 (viper-finish-R-mode)
2506 (viper-finish-change))
2508 (if (eq this-command 'viper-intercept-ESC-key)
2509 (setq com 'viper-exit-insert-state)
2510 (viper-set-unread-command-events last-input-char)
2511 (setq com (key-binding (viper-read-key-sequence nil))))
2513 (condition-case conds
2514 (command-execute com)
2516 (viper-message-conditions conds)))
2518 (viper-hide-replace-overlay))
2521 (defun viper-replace-state-carriage-return ()
2522 "Carriage return in Viper replace state."
2524 ;; If Emacs start supporting overlay maps, as it currently supports
2525 ;; text-property maps, we could do away with viper-replace-minor-mode and
2526 ;; just have keymap attached to replace overlay. Then the "if part" of this
2527 ;; statement can be deleted.
2528 (if (or (< (point) (viper-replace-start))
2529 (> (point) (viper-replace-end)))
2530 (let (viper-replace-minor-mode com)
2531 (viper-set-unread-command-events last-input-char)
2532 (setq com (key-binding (read-key-sequence nil)))
2533 (condition-case conds
2534 (command-execute com)
2536 (viper-message-conditions conds))))
2537 (if (not viper-allow-multiline-replace-regions)
2538 (viper-replace-state-exit-cmd)
2539 (if (viper-same-line (point) (viper-replace-end))
2540 (viper-replace-state-exit-cmd)
2541 ;; delete the rest of line
2542 (delete-region (point) (viper-line-pos 'end))
2545 (if (eobp) (error "Last line in buffer")))
2546 ;; skip to the next line
2548 (back-to-indentation)
2552 ;; This is the function bound to 'R'---unlimited replace.
2553 ;; Similar to Emacs's own overwrite-mode.
2554 (defun viper-overwrite (arg)
2555 "Begin overwrite mode."
2557 (let ((val (viper-p-val arg))
2558 ;;(com (viper-getcom arg))
2560 (viper-set-destructive-command (list 'viper-overwrite val ?r nil nil nil))
2561 (if (eq viper-intermediate-command 'viper-repeat)
2563 ;; Viper saves inserted text in viper-last-insertion
2564 (setq len (length viper-last-insertion))
2565 (delete-char (min len (- (point-max) (point) 1)))
2566 (viper-loop val (viper-yank-last-insertion)))
2567 (setq last-command 'viper-overwrite)
2568 (viper-set-complex-command-for-undo)
2569 (viper-set-replace-overlay (point) (viper-line-pos 'end))
2570 (viper-change-state-to-replace)
2576 (defun viper-line (arg)
2577 (let ((val (car arg))
2579 (viper-move-marker-locally 'viper-com-point (point))
2581 (viper-next-line-carefully (1- val)))
2582 ;; the following ensures that dd, cc, D, yy will do the right thing on the
2583 ;; last line of buffer when this line has no \n.
2584 (viper-add-newline-at-eob-if-necessary)
2585 (viper-execute-com 'viper-line val com))
2586 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
2589 (defun viper-yank-line (arg)
2590 "Yank ARG lines (in Vi's sense)."
2592 (let ((val (viper-p-val arg)))
2593 (viper-line (cons val ?Y))))
2598 (defun viper-region (arg)
2599 "Execute command on a region."
2601 (let ((val (viper-P-val arg))
2602 (com (viper-getcom arg)))
2603 (viper-move-marker-locally 'viper-com-point (point))
2604 (exchange-point-and-mark)
2605 (viper-execute-com 'viper-region val com)))
2607 (defun viper-Region (arg)
2608 "Execute command on a Region."
2610 (let ((val (viper-P-val arg))
2611 (com (viper-getCom arg)))
2612 (viper-move-marker-locally 'viper-com-point (point))
2613 (exchange-point-and-mark)
2614 (viper-execute-com 'viper-Region val com)))
2616 (defun viper-replace-char (arg)
2617 "Replace the following ARG chars by the character read."
2619 (if (and (eolp) (bolp)) (error "No character to replace here"))
2620 (let ((val (viper-p-val arg))
2621 (com (viper-getcom arg)))
2622 (viper-replace-char-subr com val)
2623 (if (and (eolp) (not (bolp))) (forward-char 1))
2624 (setq viper-this-command-keys
2625 (format "%sr" (if (integerp arg) arg "")))
2626 (viper-set-destructive-command
2627 (list 'viper-replace-char val ?r nil viper-d-char nil))
2630 (defun viper-replace-char-subr (com arg)
2631 (let ((inhibit-quit t)
2633 (viper-set-complex-command-for-undo)
2634 (or (eq viper-intermediate-command 'viper-repeat)
2635 (viper-special-read-and-insert-char))
2638 (setq char (if com viper-d-char (viper-char-at-pos 'backward)))
2640 (if com (insert char))
2642 (setq viper-d-char char)
2644 (viper-loop (1- (if (> arg 0) arg (- arg)))
2653 ;; basic cursor movement. j, k, l, h commands.
2655 (defun viper-forward-char (arg)
2656 "Move point right ARG characters (left if ARG negative).
2657 On reaching end of line, stop and signal error."
2659 (viper-leave-region-active)
2660 (let ((val (viper-p-val arg))
2661 (com (viper-getcom arg)))
2662 (if com (viper-move-marker-locally 'viper-com-point (point)))
2663 (if viper-ex-style-motion
2665 ;; the boundary condition check gets weird here because
2666 ;; forward-char may be the parameter of a delete, and 'dl' works
2667 ;; just like 'x' for the last char on a line, so we have to allow
2668 ;; the forward motion before the 'viper-execute-com', but, of
2669 ;; course, 'dl' doesn't work on an empty line, so we have to
2670 ;; catch that condition before 'viper-execute-com'
2671 (if (and (eolp) (bolp)) (error "") (forward-char val))
2672 (if com (viper-execute-com 'viper-forward-char val com))
2673 (if (eolp) (progn (backward-char 1) (error ""))))
2675 (if com (viper-execute-com 'viper-forward-char val com)))))
2678 (defun viper-backward-char (arg)
2679 "Move point left ARG characters (right if ARG negative).
2680 On reaching beginning of line, stop and signal error."
2682 (viper-leave-region-active)
2683 (let ((val (viper-p-val arg))
2684 (com (viper-getcom arg)))
2685 (if com (viper-move-marker-locally 'viper-com-point (point)))
2686 (if viper-ex-style-motion
2688 (if (bolp) (error "") (backward-char val))
2689 (if com (viper-execute-com 'viper-backward-char val com)))
2691 (if com (viper-execute-com 'viper-backward-char val com)))))
2694 ;; Like forward-char, but doesn't move at end of buffer.
2695 ;; Returns distance traveled
2696 ;; (positive or 0, if arg positive; negative if arg negative).
2697 (defun viper-forward-char-carefully (&optional arg)
2698 (setq arg (or arg 1))
2703 (if (< (point) pt) ; arg was negative
2704 (- (viper-chars-in-region pt (point)))
2705 (viper-chars-in-region pt (point)))))
2708 ;; Like backward-char, but doesn't move at beg of buffer.
2709 ;; Returns distance traveled
2710 ;; (negative or 0, if arg positive; positive if arg negative).
2711 (defun viper-backward-char-carefully (&optional arg)
2712 (setq arg (or arg 1))
2717 (if (> (point) pt) ; arg was negative
2718 (viper-chars-in-region pt (point))
2719 (- (viper-chars-in-region pt (point))))))
2721 (defun viper-next-line-carefully (arg)
2730 ;; Words are formed from alpha's and nonalphas - <sp>,\t\n are separators for
2731 ;; word movement. When executed with a destructive command, \n is usually left
2732 ;; untouched for the last word. Viper uses syntax table to determine what is a
2733 ;; word and what is a separator. However, \n is always a separator. Also, if
2734 ;; viper-syntax-preference is 'vi, then `_' is part of the word.
2737 (defun viper-skip-separators (forward)
2740 (viper-skip-all-separators-forward 'within-line)
2741 (if (looking-at "\n")
2744 (viper-skip-all-separators-forward 'within-line))))
2745 ;; check for eob and white space before it. move off of eob
2746 (if (and (eobp) (save-excursion
2747 (viper-backward-char-carefully)
2748 (viper-looking-at-separator)))
2749 (viper-backward-char-carefully))
2750 (viper-skip-all-separators-backward 'within-line)
2751 (viper-backward-char-carefully)
2752 (if (looking-at "\n")
2753 (viper-skip-all-separators-backward 'within-line)
2754 (or (viper-looking-at-separator) (forward-char)))))
2757 (defun viper-forward-word-kernel (val)
2759 (cond ((viper-looking-at-alpha)
2760 (viper-skip-alpha-forward "_")
2761 (viper-skip-separators t))
2762 ((viper-looking-at-separator)
2763 (viper-skip-separators t))
2764 ((not (viper-looking-at-alphasep))
2765 (viper-skip-nonalphasep-forward)
2766 (viper-skip-separators t)))
2767 (setq val (1- val))))
2769 ;; first skip non-newline separators backward, then skip \n. Then, if TWICE is
2770 ;; non-nil, skip non-\n back again, but don't overshoot the limit LIM.
2771 (defun viper-separator-skipback-special (twice lim)
2772 (let ((prev-char (viper-char-at-pos 'backward))
2773 (saved-point (point)))
2774 ;; skip non-newline separators backward
2775 (while (and (not (viper-memq-char prev-char '(nil \n)))
2777 ;; must be non-newline separator
2778 (if (eq viper-syntax-preference 'strict-vi)
2779 (viper-memq-char prev-char '(?\ ?\t))
2780 (viper-memq-char (char-syntax prev-char) '(?\ ?-))))
2781 (viper-backward-char-carefully)
2782 (setq prev-char (viper-char-at-pos 'backward)))
2784 (if (and (< lim (point)) (eq prev-char ?\n))
2786 ;; If we skipped to the next word and the prefix of this line doesn't
2787 ;; consist of separators preceded by a newline, then don't skip backwards
2789 (goto-char saved-point))
2790 (setq prev-char (viper-char-at-pos 'backward))
2792 ;; skip again, but make sure we don't overshoot the limit
2794 (while (and (not (viper-memq-char prev-char '(nil \n)))
2796 ;; must be non-newline separator
2797 (if (eq viper-syntax-preference 'strict-vi)
2798 (viper-memq-char prev-char '(?\ ?\t))
2799 (viper-memq-char (char-syntax prev-char) '(?\ ?-))))
2800 (viper-backward-char-carefully)
2801 (setq prev-char (viper-char-at-pos 'backward))))
2804 (viper-forward-char-carefully))
2808 (defun viper-forward-word (arg)
2811 (viper-leave-region-active)
2812 (let ((val (viper-p-val arg))
2813 (com (viper-getcom arg)))
2814 (if com (viper-move-marker-locally 'viper-com-point (point)))
2815 (viper-forward-word-kernel val)
2818 (cond ((viper-char-equal com ?c)
2819 (viper-separator-skipback-special 'twice viper-com-point))
2820 ;; Yank words including the whitespace, but not newline
2821 ((viper-char-equal com ?y)
2822 (viper-separator-skipback-special nil viper-com-point))
2823 ((viper-dotable-command-p com)
2824 (viper-separator-skipback-special nil viper-com-point)))
2825 (viper-execute-com 'viper-forward-word val com)))
2829 (defun viper-forward-Word (arg)
2830 "Forward word delimited by white characters."
2832 (viper-leave-region-active)
2833 (let ((val (viper-p-val arg))
2834 (com (viper-getcom arg)))
2835 (if com (viper-move-marker-locally 'viper-com-point (point)))
2837 (viper-skip-nonseparators 'forward)
2838 (viper-skip-separators t))
2840 (cond ((viper-char-equal com ?c)
2841 (viper-separator-skipback-special 'twice viper-com-point))
2842 ;; Yank words including the whitespace, but not newline
2843 ((viper-char-equal com ?y)
2844 (viper-separator-skipback-special nil viper-com-point))
2845 ((viper-dotable-command-p com)
2846 (viper-separator-skipback-special nil viper-com-point)))
2847 (viper-execute-com 'viper-forward-Word val com)))))
2850 ;; this is a bit different from Vi, but Vi's end of word
2851 ;; makes no sense whatsoever
2852 (defun viper-end-of-word-kernel ()
2853 (if (viper-end-of-word-p) (forward-char))
2854 (if (viper-looking-at-separator)
2855 (viper-skip-all-separators-forward))
2857 (cond ((viper-looking-at-alpha) (viper-skip-alpha-forward "_"))
2858 ((not (viper-looking-at-alphasep)) (viper-skip-nonalphasep-forward)))
2859 (viper-backward-char-carefully))
2861 (defun viper-end-of-word-p ()
2864 (cond ((viper-looking-at-alpha)
2866 (not (viper-looking-at-alpha)))
2867 ((not (viper-looking-at-alphasep))
2869 (viper-looking-at-alphasep))))))
2872 (defun viper-end-of-word (arg &optional careful)
2873 "Move point to end of current word."
2875 (viper-leave-region-active)
2876 (let ((val (viper-p-val arg))
2877 (com (viper-getcom arg)))
2878 (if com (viper-move-marker-locally 'viper-com-point (point)))
2879 (viper-loop val (viper-end-of-word-kernel))
2883 (viper-execute-com 'viper-end-of-word val com)))))
2885 (defun viper-end-of-Word (arg)
2886 "Forward to end of word delimited by white character."
2888 (viper-leave-region-active)
2889 (let ((val (viper-p-val arg))
2890 (com (viper-getcom arg)))
2891 (if com (viper-move-marker-locally 'viper-com-point (point)))
2893 (viper-end-of-word-kernel)
2894 (viper-skip-nonseparators 'forward)
2899 (viper-execute-com 'viper-end-of-Word val com)))))
2901 (defun viper-backward-word-kernel (val)
2903 (viper-backward-char-carefully)
2904 (cond ((viper-looking-at-alpha)
2905 (viper-skip-alpha-backward "_"))
2906 ((viper-looking-at-separator)
2908 (viper-skip-separators nil)
2909 (viper-backward-char-carefully)
2910 (cond ((viper-looking-at-alpha)
2911 (viper-skip-alpha-backward "_"))
2912 ((not (viper-looking-at-alphasep))
2913 (viper-skip-nonalphasep-backward))
2914 ((bobp)) ; could still be at separator, but at beg of buffer
2915 (t (forward-char))))
2916 ((not (viper-looking-at-alphasep))
2917 (viper-skip-nonalphasep-backward)))
2918 (setq val (1- val))))
2920 (defun viper-backward-word (arg)
2923 (viper-leave-region-active)
2924 (let ((val (viper-p-val arg))
2925 (com (viper-getcom arg)))
2928 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2930 (viper-move-marker-locally 'viper-com-point (point))
2931 (if i (forward-char))))
2932 (viper-backward-word-kernel val)
2933 (if com (viper-execute-com 'viper-backward-word val com))))
2935 (defun viper-backward-Word (arg)
2936 "Backward word delimited by white character."
2938 (viper-leave-region-active)
2939 (let ((val (viper-p-val arg))
2940 (com (viper-getcom arg)))
2943 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2945 (viper-move-marker-locally 'viper-com-point (point))
2946 (if i (forward-char))))
2948 (viper-skip-separators nil) ; nil means backward here
2949 (viper-skip-nonseparators 'backward))
2950 (if com (viper-execute-com 'viper-backward-Word val com))))
2956 (defun viper-beginning-of-line (arg)
2957 "Go to beginning of line."
2959 (viper-leave-region-active)
2960 (let ((val (viper-p-val arg))
2961 (com (viper-getcom arg)))
2962 (if com (viper-move-marker-locally 'viper-com-point (point)))
2963 (beginning-of-line val)
2964 (if com (viper-execute-com 'viper-beginning-of-line val com))))
2966 (defun viper-bol-and-skip-white (arg)
2967 "Beginning of line at first non-white character."
2969 (viper-leave-region-active)
2970 (let ((val (viper-p-val arg))
2971 (com (viper-getcom arg)))
2972 (if com (viper-move-marker-locally 'viper-com-point (point)))
2973 (forward-to-indentation (1- val))
2974 (if com (viper-execute-com 'viper-bol-and-skip-white val com))))
2976 (defun viper-goto-eol (arg)
2977 "Go to end of line."
2979 (viper-leave-region-active)
2980 (let ((val (viper-p-val arg))
2981 (com (viper-getcom arg)))
2982 (if com (viper-move-marker-locally 'viper-com-point (point)))
2984 (if com (viper-execute-com 'viper-goto-eol val com))
2985 (if viper-ex-style-motion
2986 (if (and (eolp) (not (bolp))
2987 ;; a fix for viper-change-to-eol
2988 (not (equal viper-current-state 'insert-state)))
2993 (defun viper-goto-col (arg)
2994 "Go to ARG's column."
2996 (viper-leave-region-active)
2997 (let ((val (viper-p-val arg))
2998 (com (viper-getcom arg))
3001 (viper-chars-in-region
3002 (viper-line-pos 'start) (viper-line-pos 'end)))
3003 (if com (viper-move-marker-locally 'viper-com-point (point)))
3005 (forward-char (1- (min line-len val)))
3006 (while (> (current-column) (1- val))
3008 (if com (viper-execute-com 'viper-goto-col val com))
3011 (if (> val (current-column)) (error "")))
3015 (defun viper-next-line (arg)
3018 (viper-leave-region-active)
3019 (let ((val (viper-p-val arg))
3020 (com (viper-getCom arg)))
3021 (if com (viper-move-marker-locally 'viper-com-point (point)))
3023 (if viper-ex-style-motion
3024 (if (and (eolp) (not (bolp))) (backward-char 1)))
3025 (setq this-command 'next-line)
3026 (if com (viper-execute-com 'viper-next-line val com))))
3028 (defun viper-next-line-at-bol (arg)
3029 "Next line at beginning of line."
3031 (viper-leave-region-active)
3034 (if (eobp) (error "Last line in buffer")))
3035 (let ((val (viper-p-val arg))
3036 (com (viper-getCom arg)))
3037 (if com (viper-move-marker-locally 'viper-com-point (point)))
3039 (back-to-indentation)
3040 (if com (viper-execute-com 'viper-next-line-at-bol val com))))
3043 (defun viper-previous-line (arg)
3044 "Go to previous line."
3046 (viper-leave-region-active)
3047 (let ((val (viper-p-val arg))
3048 (com (viper-getCom arg)))
3049 (if com (viper-move-marker-locally 'viper-com-point (point)))
3051 (if viper-ex-style-motion
3052 (if (and (eolp) (not (bolp))) (backward-char 1)))
3053 (setq this-command 'previous-line)
3054 (if com (viper-execute-com 'viper-previous-line val com))))
3057 (defun viper-previous-line-at-bol (arg)
3058 "Previous line at beginning of line."
3060 (viper-leave-region-active)
3063 (if (bobp) (error "First line in buffer")))
3064 (let ((val (viper-p-val arg))
3065 (com (viper-getCom arg)))
3066 (if com (viper-move-marker-locally 'viper-com-point (point)))
3067 (forward-line (- val))
3068 (back-to-indentation)
3069 (if com (viper-execute-com 'viper-previous-line val com))))
3071 (defun viper-change-to-eol (arg)
3072 "Change to end of line."
3074 (viper-goto-eol (cons arg ?c)))
3076 (defun viper-kill-line (arg)
3079 (viper-goto-eol (cons arg ?d)))
3081 (defun viper-erase-line (arg)
3084 (viper-beginning-of-line (cons arg ?d)))
3089 (defun viper-goto-line (arg)
3090 "Go to ARG's line. Without ARG go to end of buffer."
3092 (let ((val (viper-P-val arg))
3093 (com (viper-getCom arg)))
3094 (viper-move-marker-locally 'viper-com-point (point))
3095 (viper-deactivate-mark)
3098 (goto-char (point-max))
3099 (goto-char (point-min))
3100 (forward-line (1- val)))
3102 ;; positioning is done twice: before and after command execution
3103 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3104 (back-to-indentation)
3106 (if com (viper-execute-com 'viper-goto-line val com))
3108 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3109 (back-to-indentation)
3112 ;; Find ARG's occurrence of CHAR on the current line.
3113 ;; If FORWARD then search is forward, otherwise backward. OFFSET is used to
3114 ;; adjust point after search.
3115 (defun viper-find-char (arg char forward offset)
3116 (or (char-or-string-p char) (error ""))
3117 (let ((arg (if forward arg (- arg)))
3118 (cmd (if (eq viper-intermediate-command 'viper-repeat)
3120 (viper-array-to-string (this-command-keys))))
3121 point region-beg region-end)
3124 (if (> arg 0) ; forward
3126 (setq region-beg (point))
3127 (if viper-allow-multiline-replace-regions
3128 (viper-forward-paragraph 1)
3130 (setq region-end (point)))
3131 (setq region-end (point))
3132 (if viper-allow-multiline-replace-regions
3133 (viper-backward-paragraph 1)
3134 (beginning-of-line))
3135 (setq region-beg (point)))
3136 (if (or (and (< arg 0)
3137 (< (- region-end region-beg)
3138 (if viper-allow-multiline-replace-regions
3142 (< (- region-end region-beg)
3143 (if viper-allow-multiline-replace-regions
3146 (error "Command `%s': At %s of %s"
3148 (if (> arg 0) "end" "beginning")
3149 (if viper-allow-multiline-replace-regions
3150 "paragraph" "line")))
3151 (narrow-to-region region-beg region-end)
3152 ;; if arg > 0, point is forwarded before search.
3153 (if (> arg 0) (goto-char (1+ (point-min)))
3154 (goto-char (point-max)))
3155 (if (let ((case-fold-search nil))
3156 (search-forward (char-to-string char) nil 0 arg))
3157 (setq point (point))
3158 (error "Command `%s': `%c' not found" cmd char))))
3161 (backward-char (if offset 2 1))
3162 (forward-char (if offset 1 0)))))
3164 (defun viper-find-char-forward (arg)
3165 "Find char on the line.
3166 If called interactively read the char to find from the terminal, and if
3167 called from viper-repeat, the char last used is used. This behavior is
3168 controlled by the sign of prefix numeric value."
3170 (let ((val (viper-p-val arg))
3171 (com (viper-getcom arg))
3172 (cmd-representation (nth 5 viper-d-com)))
3174 ;; this means that the function was called interactively
3175 (setq viper-f-char (read-char)
3178 ;; viper-repeat --- set viper-F-char from command-keys
3179 (setq viper-F-char (if (stringp cmd-representation)
3180 (viper-seq-last-elt cmd-representation)
3182 viper-f-char viper-F-char)
3184 (if com (viper-move-marker-locally 'viper-com-point (point)))
3186 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t nil)
3190 (setq viper-F-char viper-f-char) ; set new viper-F-char
3192 (viper-execute-com 'viper-find-char-forward val com)))))
3194 (defun viper-goto-char-forward (arg)
3195 "Go up to char ARG forward on line."
3197 (let ((val (viper-p-val arg))
3198 (com (viper-getcom arg))
3199 (cmd-representation (nth 5 viper-d-com)))
3201 ;; this means that the function was called interactively
3202 (setq viper-f-char (read-char)
3205 ;; viper-repeat --- set viper-F-char from command-keys
3206 (setq viper-F-char (if (stringp cmd-representation)
3207 (viper-seq-last-elt cmd-representation)
3209 viper-f-char viper-F-char)
3211 (if com (viper-move-marker-locally 'viper-com-point (point)))
3213 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t t)
3217 (setq viper-F-char viper-f-char) ; set new viper-F-char
3219 (viper-execute-com 'viper-goto-char-forward val com)))))
3221 (defun viper-find-char-backward (arg)
3222 "Find char ARG on line backward."
3224 (let ((val (viper-p-val arg))
3225 (com (viper-getcom arg))
3226 (cmd-representation (nth 5 viper-d-com)))
3228 ;; this means that the function was called interactively
3229 (setq viper-f-char (read-char)
3232 ;; viper-repeat --- set viper-F-char from command-keys
3233 (setq viper-F-char (if (stringp cmd-representation)
3234 (viper-seq-last-elt cmd-representation)
3236 viper-f-char viper-F-char)
3238 (if com (viper-move-marker-locally 'viper-com-point (point)))
3240 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil nil)
3244 (setq viper-F-char viper-f-char) ; set new viper-F-char
3245 (viper-execute-com 'viper-find-char-backward val com)))))
3247 (defun viper-goto-char-backward (arg)
3248 "Go up to char ARG backward on line."
3250 (let ((val (viper-p-val arg))
3251 (com (viper-getcom arg))
3252 (cmd-representation (nth 5 viper-d-com)))
3254 ;; this means that the function was called interactively
3255 (setq viper-f-char (read-char)
3258 ;; viper-repeat --- set viper-F-char from command-keys
3259 (setq viper-F-char (if (stringp cmd-representation)
3260 (viper-seq-last-elt cmd-representation)
3262 viper-f-char viper-F-char)
3264 (if com (viper-move-marker-locally 'viper-com-point (point)))
3266 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil t)
3270 (setq viper-F-char viper-f-char) ; set new viper-F-char
3271 (viper-execute-com 'viper-goto-char-backward val com)))))
3273 (defun viper-repeat-find (arg)
3274 "Repeat previous find command."
3276 (let ((val (viper-p-val arg))
3277 (com (viper-getcom arg)))
3278 (viper-deactivate-mark)
3279 (if com (viper-move-marker-locally 'viper-com-point (point)))
3280 (viper-find-char val viper-f-char viper-f-forward viper-f-offset)
3283 (if viper-f-forward (forward-char))
3284 (viper-execute-com 'viper-repeat-find val com)))))
3286 (defun viper-repeat-find-opposite (arg)
3287 "Repeat previous find command in the opposite direction."
3289 (let ((val (viper-p-val arg))
3290 (com (viper-getcom arg)))
3291 (viper-deactivate-mark)
3292 (if com (viper-move-marker-locally 'viper-com-point (point)))
3293 (viper-find-char val viper-f-char (not viper-f-forward) viper-f-offset)
3296 (if viper-f-forward (forward-char))
3297 (viper-execute-com 'viper-repeat-find-opposite val com)))))
3300 ;; window scrolling etc.
3302 (defun viper-window-top (arg)
3303 "Go to home window line."
3305 (let ((val (viper-p-val arg))
3306 (com (viper-getCom arg)))
3307 (viper-leave-region-active)
3308 (if com (viper-move-marker-locally 'viper-com-point (point)))
3310 (move-to-window-line (1- val))
3312 ;; positioning is done twice: before and after command execution
3313 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3314 (back-to-indentation)
3316 (if com (viper-execute-com 'viper-window-top val com))
3318 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3319 (back-to-indentation)
3322 (defun viper-window-middle (arg)
3323 "Go to middle window line."
3325 (let ((val (viper-p-val arg))
3326 (com (viper-getCom arg)))
3327 (viper-leave-region-active)
3328 (if com (viper-move-marker-locally 'viper-com-point (point)))
3330 (move-to-window-line (+ (/ (1- (window-height)) 2) (1- val)))
3332 ;; positioning is done twice: before and after command execution
3333 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3334 (back-to-indentation)
3336 (if com (viper-execute-com 'viper-window-middle val com))
3338 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3339 (back-to-indentation)
3342 (defun viper-window-bottom (arg)
3343 "Go to last window line."
3345 (let ((val (viper-p-val arg))
3346 (com (viper-getCom arg)))
3347 (viper-leave-region-active)
3348 (if com (viper-move-marker-locally 'viper-com-point (point)))
3350 (move-to-window-line (- val))
3352 ;; positioning is done twice: before and after command execution
3353 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3354 (back-to-indentation)
3356 (if com (viper-execute-com 'viper-window-bottom val com))
3358 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3359 (back-to-indentation)
3362 (defun viper-line-to-top (arg)
3363 "Put current line on the home line."
3365 (recenter (1- arg)))
3367 (defun viper-line-to-middle (arg)
3368 "Put current line on the middle line."
3370 (recenter (+ (1- arg) (/ (1- (window-height)) 2))))
3372 (defun viper-line-to-bottom (arg)
3373 "Put current line on the last line."
3375 (recenter (- (window-height) (1+ arg))))
3377 ;; If point is within viper-search-scroll-threshold of window top or bottom,
3378 ;; scroll up or down 1/7 of window height, depending on whether we are at the
3379 ;; bottom or at the top of the window. This function is called by viper-search
3380 ;; (which is called from viper-search-forward/backward/next). If the value of
3381 ;; viper-search-scroll-threshold is negative - don't scroll.
3382 (defun viper-adjust-window ()
3383 (let ((win-height (viper-cond-compile-for-xemacs-or-emacs
3384 (window-displayed-height) ; xemacs
3386 (1- (window-height)) ; adjust for modeline
3389 at-top-p at-bottom-p
3390 min-scroll direction)
3392 (move-to-window-line 0) ; top
3394 (<= (count-lines pt (point))
3395 viper-search-scroll-threshold))
3396 (move-to-window-line -1) ; bottom
3398 (<= (count-lines pt (point)) viper-search-scroll-threshold))
3400 (cond (at-top-p (setq min-scroll (1- viper-search-scroll-threshold)
3402 (at-bottom-p (setq min-scroll (1+ viper-search-scroll-threshold)
3406 (* (max min-scroll (/ win-height 7)) direction)))
3411 ;; must correct this to only match ( to ) etc. On the other hand
3412 ;; it is good that paren match gets confused, because that way you
3413 ;; catch _all_ imbalances.
3415 (defun viper-paren-match (arg)
3416 "Go to the matching parenthesis."
3418 (viper-leave-region-active)
3419 (let ((com (viper-getcom arg))
3420 (parse-sexp-ignore-comments viper-parse-sexp-ignore-comments)
3423 (if (or (> arg 99) (< arg 1))
3424 (error "Prefix must be between 1 and 99")
3426 (if (> (point-max) 80000)
3427 (* (/ (point-max) 100) arg)
3428 (/ (* (point-max) arg) 100)))
3429 (back-to-indentation))
3430 (let (beg-lim end-lim)
3431 (if (and (eolp) (not (bolp))) (forward-char -1))
3432 (if (not (looking-at "[][(){}]"))
3433 (setq anchor-point (point)))
3436 (setq beg-lim (point))
3438 (setq end-lim (point)))
3439 (cond ((re-search-forward "[][(){}]" end-lim t)
3441 ((re-search-backward "[][(){}]" beg-lim t))
3443 (error "No matching character on line"))))
3444 (cond ((looking-at "[\(\[{]")
3445 (if com (viper-move-marker-locally 'viper-com-point (point)))
3448 (viper-execute-com 'viper-paren-match nil com)
3453 (viper-move-marker-locally 'viper-com-point anchor-point)
3455 (viper-execute-com 'viper-paren-match nil com)
3457 ((looking-at "[])}]")
3459 (if com (viper-move-marker-locally 'viper-com-point (point)))
3461 (if com (viper-execute-com 'viper-paren-match nil com)))
3464 (defun viper-toggle-parse-sexp-ignore-comments ()
3466 (setq viper-parse-sexp-ignore-comments
3467 (not viper-parse-sexp-ignore-comments))
3469 "From now on, `%%' will %signore parentheses inside comment fields"
3470 (if viper-parse-sexp-ignore-comments "" "NOT "))))
3473 ;; sentence, paragraph and heading
3475 (defun viper-forward-sentence (arg)
3478 (or (eq last-command this-command)
3480 (let ((val (viper-p-val arg))
3481 (com (viper-getcom arg)))
3482 (if com (viper-move-marker-locally 'viper-com-point (point)))
3483 (forward-sentence val)
3484 (if com (viper-execute-com 'viper-forward-sentence nil com))))
3486 (defun viper-backward-sentence (arg)
3487 "Backward sentence."
3489 (or (eq last-command this-command)
3491 (let ((val (viper-p-val arg))
3492 (com (viper-getcom arg)))
3493 (if com (viper-move-marker-locally 'viper-com-point (point)))
3494 (backward-sentence val)
3495 (if com (viper-execute-com 'viper-backward-sentence nil com))))
3497 (defun viper-forward-paragraph (arg)
3498 "Forward paragraph."
3500 (or (eq last-command this-command)
3502 (let ((val (viper-p-val arg))
3503 ;; if you want d} operate on whole lines, change viper-getcom to
3504 ;; viper-getCom below
3505 (com (viper-getcom arg)))
3506 (if com (viper-move-marker-locally 'viper-com-point (point)))
3507 (forward-paragraph val)
3511 (viper-execute-com 'viper-forward-paragraph nil com)))))
3513 (defun viper-backward-paragraph (arg)
3514 "Backward paragraph."
3516 (or (eq last-command this-command)
3518 (let ((val (viper-p-val arg))
3519 ;; if you want d{ operate on whole lines, change viper-getcom to
3520 ;; viper-getCom below
3521 (com (viper-getcom arg)))
3522 (if com (viper-move-marker-locally 'viper-com-point (point)))
3523 (backward-paragraph val)
3527 (viper-execute-com 'viper-backward-paragraph nil com)
3528 (backward-char 1)))))
3530 ;; should be mode-specific
3531 (defun viper-prev-heading (arg)
3533 (let ((val (viper-p-val arg))
3534 (com (viper-getCom arg)))
3535 (if com (viper-move-marker-locally 'viper-com-point (point)))
3536 (re-search-backward viper-heading-start nil t val)
3537 (goto-char (match-beginning 0))
3538 (if com (viper-execute-com 'viper-prev-heading nil com))))
3540 (defun viper-heading-end (arg)
3542 (let ((val (viper-p-val arg))
3543 (com (viper-getCom arg)))
3544 (if com (viper-move-marker-locally 'viper-com-point (point)))
3545 (re-search-forward viper-heading-end nil t val)
3546 (goto-char (match-beginning 0))
3547 (if com (viper-execute-com 'viper-heading-end nil com))))
3549 (defun viper-next-heading (arg)
3551 (let ((val (viper-p-val arg))
3552 (com (viper-getCom arg)))
3553 (if com (viper-move-marker-locally 'viper-com-point (point)))
3555 (re-search-forward viper-heading-start nil t val)
3556 (goto-char (match-beginning 0))
3557 (if com (viper-execute-com 'viper-next-heading nil com))))
3562 (defun viper-scroll-screen (arg)
3563 "Scroll to next screen."
3569 (setq arg (1- arg)))
3572 (setq arg (1+ arg))))
3576 (message "End of buffer")
3577 (goto-char (point-max)))
3578 (message "Beginning of buffer")
3579 (goto-char (point-min))))
3582 (defun viper-scroll-screen-back (arg)
3583 "Scroll to previous screen."
3585 (viper-scroll-screen (- arg)))
3587 (defun viper-scroll-down (arg)
3588 "Pull down half screen."
3592 (scroll-down (/ (window-height) 2))
3595 (message "Beginning of buffer")
3596 (goto-char (point-min)))))
3598 (defun viper-scroll-down-one (arg)
3599 "Scroll up one line."
3603 (defun viper-scroll-up (arg)
3604 "Pull up half screen."
3608 (scroll-up (/ (window-height) 2))
3611 (message "End of buffer")
3612 (goto-char (point-max)))))
3614 (defun viper-scroll-up-one (arg)
3615 "Scroll down one line."
3622 (defun viper-if-string (prompt)
3623 (if (memq viper-intermediate-command
3624 '(viper-command-argument viper-digit-argument viper-repeat))
3625 (setq viper-this-command-keys (this-command-keys)))
3626 (let ((s (viper-read-string-with-history
3629 'viper-search-history
3630 (car viper-search-history))))
3631 (if (not (string= s ""))
3632 (setq viper-s-string s))))
3635 (defun viper-toggle-search-style (arg)
3636 "Toggle the value of viper-case-fold-search/viper-re-search.
3637 Without prefix argument, will ask which search style to toggle. With prefix
3638 arg 1,toggles viper-case-fold-search; with arg 2 toggles viper-re-search.
3640 Although this function is bound to \\[viper-toggle-search-style], the most
3641 convenient way to use it is to bind `//' to the macro
3642 `1 M-x viper-toggle-search-style' and `///' to
3643 `2 M-x viper-toggle-search-style'. In this way, hitting `//' quickly will
3644 toggle case-fold-search and hitting `/' three times witth toggle regexp
3645 search. Macros are more convenient in this case because they don't affect
3646 the Emacs binding of `/'."
3649 (cond ((or (eq arg 1)
3651 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3652 (if viper-case-fold-search
3653 "case-insensitive" "case-sensitive")
3654 (if viper-case-fold-search
3656 "case-insensitive")))))
3657 (setq viper-case-fold-search (null viper-case-fold-search))
3658 (if viper-case-fold-search
3659 (setq msg "Search becomes case-insensitive")
3660 (setq msg "Search becomes case-sensitive")))
3663 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3665 "regexp-search" "vanilla-search")
3668 "regexp-search")))))
3669 (setq viper-re-search (null viper-re-search))
3671 (setq msg "Search becomes regexp-style")
3672 (setq msg "Search becomes vanilla-style")))
3674 (setq msg "Search style remains unchanged")))
3677 (defun viper-set-searchstyle-toggling-macros (unset &optional major-mode)
3678 "Set the macros for toggling the search style in Viper's vi-state.
3679 The macro that toggles case sensitivity is bound to `//', and the one that
3680 toggles regexp search is bound to `///'.
3681 With a prefix argument, this function unsets the macros.
3682 If MAJOR-MODE is set, set the macros only in that major mode."
3685 (if (and major-mode (symbolp major-mode))
3686 (setq scope major-mode)
3691 ;; toggle case sensitivity in search
3692 (viper-record-kbd-macro
3694 [1 (meta x) v i p e r - t o g g l e - s e a r c h - s t y l e return]
3696 ;; toggle regexp/vanila search
3697 (viper-record-kbd-macro
3699 [2 (meta x) v i p e r - t o g g l e - s e a r c h - s t y l e return]
3703 "// and /// now toggle case-sensitivity and regexp search")))
3704 (viper-unrecord-kbd-macro "//" 'vi-state)
3706 (viper-unrecord-kbd-macro "///" 'vi-state)))
3710 (defun viper-set-parsing-style-toggling-macro (unset)
3711 "Set `%%%' to be a macro that toggles whether comment fields should be parsed for matching parentheses.
3712 This is used in conjunction with the `%' command.
3714 With a prefix argument, unsets the macro."
3719 ;; Make %%% toggle parsing comments for matching parentheses
3720 (viper-record-kbd-macro
3722 [(meta x) v i p e r - t o g g l e - p a r s e - s e x p - i g n o r e - c o m m e n t s return]
3726 "%%%%%% now toggles whether comments should be parsed for matching parentheses")))
3727 (viper-unrecord-kbd-macro "%%%" 'vi-state))))
3730 (defun viper-set-emacs-state-searchstyle-macros (unset &optional arg-majormode)
3731 "Set the macros for toggling the search style in Viper's emacs-state.
3732 The macro that toggles case sensitivity is bound to `//', and the one that
3733 toggles regexp search is bound to `///'.
3734 With a prefix argument, this function unsets the macros.
3735 If the optional prefix argument is non-nil and specifies a valid major mode,
3736 this sets the macros only in the macros in that major mode. Otherwise,
3737 the macros are set in the current major mode.
3738 \(When unsetting the macros, the second argument has no effect.\)"
3743 ;; toggle case sensitivity in search
3744 (viper-record-kbd-macro
3746 [1 (meta x) v i p e r - t o g g l e - s e a r c h - s t y l e return]
3747 (or arg-majormode major-mode))
3748 ;; toggle regexp/vanila search
3749 (viper-record-kbd-macro
3751 [2 (meta x) v i p e r - t o g g l e - s e a r c h - s t y l e return]
3752 (or arg-majormode major-mode))
3755 "// and /// now toggle case-sensitivity and regexp search.")))
3756 (viper-unrecord-kbd-macro "//" 'emacs-state)
3758 (viper-unrecord-kbd-macro "///" 'emacs-state))))
3761 (defun viper-search-forward (arg)
3762 "Search a string forward.
3763 ARG is used to find the ARG's occurrence of the string.
3764 Null string will repeat previous search."
3766 (let ((val (viper-P-val arg))
3767 (com (viper-getcom arg))
3768 (old-str viper-s-string)
3770 (setq viper-s-forward t)
3771 (viper-if-string "/")
3772 ;; this is not used at present, but may be used later
3773 (if (or (not (equal old-str viper-s-string))
3774 (not (markerp viper-local-search-start-marker))
3775 (not (marker-buffer viper-local-search-start-marker)))
3776 (setq viper-local-search-start-marker (point-marker)))
3777 (viper-search viper-s-string t val)
3780 (viper-move-marker-locally 'viper-com-point (mark t))
3781 (viper-execute-com 'viper-search-next val com)))
3784 (defun viper-search-backward (arg)
3785 "Search a string backward.
3786 ARG is used to find the ARG's occurrence of the string.
3787 Null string will repeat previous search."
3789 (let ((val (viper-P-val arg))
3790 (com (viper-getcom arg))
3791 (old-str viper-s-string)
3793 (setq viper-s-forward nil)
3794 (viper-if-string "?")
3795 ;; this is not used at present, but may be used later
3796 (if (or (not (equal old-str viper-s-string))
3797 (not (markerp viper-local-search-start-marker))
3798 (not (marker-buffer viper-local-search-start-marker)))
3799 (setq viper-local-search-start-marker (point-marker)))
3800 (viper-search viper-s-string nil val)
3803 (viper-move-marker-locally 'viper-com-point (mark t))
3804 (viper-execute-com 'viper-search-next val com)))))
3807 ;; Search for COUNT's occurrence of STRING.
3808 ;; Search is forward if FORWARD is non-nil, otherwise backward.
3809 ;; INIT-POINT is the position where search is to start.
3811 ;; (STRING FORW COUNT &optional NO-OFFSET INIT-POINT LIMIT FAIL-IF-NOT-FOUND)
3812 (defun viper-search (string forward arg
3813 &optional no-offset init-point fail-if-not-found)
3814 (if (not (equal string ""))
3815 (let ((val (viper-p-val arg))
3816 (com (viper-getcom arg))
3817 (offset (not no-offset))
3818 (case-fold-search viper-case-fold-search)
3819 (start-point (or init-point (point))))
3820 (viper-deactivate-mark)
3824 (if offset (viper-forward-char-carefully))
3827 (re-search-forward string nil nil val)
3828 (re-search-backward string))
3829 (search-forward string nil nil val)
3830 (search-backward string))
3831 (if (not (equal start-point (point)))
3832 (push-mark start-point t)))
3834 (if (and (not fail-if-not-found) viper-search-wrap-around-t)
3836 (message "Search wrapped around BOTTOM of buffer")
3837 (goto-char (point-min))
3838 (viper-search string forward (cons 1 com) t start-point 'fail)
3839 ;; don't wait in macros
3840 (or executing-kbd-macro
3841 (memq viper-intermediate-command
3843 viper-digit-argument
3844 viper-command-argument))
3846 ;; delete the wrap-around message
3849 (goto-char start-point)
3850 (error "`%s': %s not found"
3852 (if viper-re-search "Pattern" "String"))
3858 (re-search-backward string nil nil val)
3859 (search-backward string nil nil val))
3860 (if (not (equal start-point (point)))
3861 (push-mark start-point t)))
3863 (if (and (not fail-if-not-found) viper-search-wrap-around-t)
3865 (message "Search wrapped around TOP of buffer")
3866 (goto-char (point-max))
3867 (viper-search string forward (cons 1 com) t start-point 'fail)
3868 ;; don't wait in macros
3869 (or executing-kbd-macro
3870 (memq viper-intermediate-command
3872 viper-digit-argument
3873 viper-command-argument))
3875 ;; delete the wrap-around message
3878 (goto-char start-point)
3879 (error "`%s': %s not found"
3881 (if viper-re-search "Pattern" "String"))
3883 ;; pull up or down if at top/bottom of window
3884 (viper-adjust-window)
3885 ;; highlight the result of search
3886 ;; don't wait and don't highlight in macros
3887 (or executing-kbd-macro
3888 (memq viper-intermediate-command
3889 '(viper-repeat viper-digit-argument viper-command-argument))
3890 (viper-flash-search-pattern))
3893 (defun viper-search-next (arg)
3894 "Repeat previous search."
3896 (let ((val (viper-p-val arg))
3897 (com (viper-getcom arg))
3899 (if (null viper-s-string) (error viper-NoPrevSearch))
3900 (viper-search viper-s-string viper-s-forward arg)
3903 (viper-move-marker-locally 'viper-com-point (mark t))
3904 (viper-execute-com 'viper-search-next val com)))))
3906 (defun viper-search-Next (arg)
3907 "Repeat previous search in the reverse direction."
3909 (let ((val (viper-p-val arg))
3910 (com (viper-getcom arg))
3912 (if (null viper-s-string) (error viper-NoPrevSearch))
3913 (viper-search viper-s-string (not viper-s-forward) arg)
3916 (viper-move-marker-locally 'viper-com-point (mark t))
3917 (viper-execute-com 'viper-search-Next val com)))))
3920 ;; Search contents of buffer defined by one of Viper's motion commands.
3921 ;; Repeatable via `n' and `N'.
3922 (defun viper-buffer-search-enable (&optional c)
3923 (cond (c (setq viper-buffer-search-char c))
3924 ((null viper-buffer-search-char)
3925 (setq viper-buffer-search-char ?g)))
3926 (define-key viper-vi-basic-map
3927 (cond ((viper-characterp viper-buffer-search-char)
3928 (char-to-string viper-buffer-search-char))
3929 (t (error "viper-buffer-search-char: wrong value type, %S"
3930 viper-buffer-search-char)))
3931 'viper-command-argument)
3932 (aset viper-exec-array viper-buffer-search-char 'viper-exec-buffer-search)
3933 (setq viper-prefix-commands
3934 (cons viper-buffer-search-char viper-prefix-commands)))
3936 ;; This is a Viper wraper for isearch-forward.
3937 (defun viper-isearch-forward (arg)
3938 "Do incremental search forward."
3940 ;; emacs bug workaround
3941 (if (listp arg) (setq arg (car arg)))
3942 (viper-exec-form-in-emacs (list 'isearch-forward arg)))
3944 ;; This is a Viper wraper for isearch-backward."
3945 (defun viper-isearch-backward (arg)
3946 "Do incremental search backward."
3948 ;; emacs bug workaround
3949 (if (listp arg) (setq arg (car arg)))
3950 (viper-exec-form-in-emacs (list 'isearch-backward arg)))
3953 ;; visiting and killing files, buffers
3955 (defun viper-switch-to-buffer ()
3956 "Switch to buffer in the current window."
3958 (let ((other-buffer (other-buffer (current-buffer)))
3961 (funcall viper-read-buffer-function
3962 "Switch to buffer in this window: " other-buffer))
3963 (switch-to-buffer buffer)))
3965 (defun viper-switch-to-buffer-other-window ()
3966 "Switch to buffer in another window."
3968 (let ((other-buffer (other-buffer (current-buffer)))
3971 (funcall viper-read-buffer-function
3972 "Switch to buffer in another window: " other-buffer))
3973 (switch-to-buffer-other-window buffer)))
3975 (defun viper-kill-buffer ()
3978 (let (buffer buffer-name)
3980 (funcall viper-read-buffer-function
3981 (format "Kill buffer \(%s\): "
3982 (buffer-name (current-buffer)))))
3984 (if (null buffer-name)
3986 (get-buffer buffer-name)))
3987 (if (null buffer) (error "`%s': No such buffer" buffer-name))
3988 (if (or (not (buffer-modified-p buffer))
3991 "Buffer `%s' is modified, are you sure you want to kill it? "
3993 (kill-buffer buffer)
3994 (error "Buffer not killed"))))
4000 (defsubst viper-yank (text)
4001 "Yank TEXT silently. This works correctly with Emacs's yank-pop command."
4003 (setq this-command 'yank))
4005 (defun viper-put-back (arg)
4006 "Put back after point/below line."
4008 (let ((val (viper-p-val arg))
4009 (text (if viper-use-register
4010 (cond ((viper-valid-register viper-use-register '(digit))
4012 (- viper-use-register ?1) 'do-not-rotate))
4013 ((viper-valid-register viper-use-register)
4014 (get-register (downcase viper-use-register)))
4015 (t (error viper-InvalidRegister viper-use-register)))
4017 sv-point chars-inserted lines-inserted)
4019 (if viper-use-register
4020 (let ((reg viper-use-register))
4021 (setq viper-use-register nil)
4022 (error viper-EmptyRegister reg))
4024 (setq viper-use-register nil)
4025 (if (viper-end-with-a-newline-p text)
4031 (beginning-of-line))
4032 (if (not (eolp)) (viper-forward-char-carefully)))
4033 (set-marker (viper-mark-marker) (point) (current-buffer))
4034 (viper-set-destructive-command
4035 (list 'viper-put-back val nil viper-use-register nil nil))
4036 (setq sv-point (point))
4037 (viper-loop val (viper-yank text))
4038 (setq chars-inserted (abs (- (point) sv-point))
4039 lines-inserted (abs (count-lines (point) sv-point)))
4040 (if (or (> chars-inserted viper-change-notification-threshold)
4041 (> lines-inserted viper-change-notification-threshold))
4042 (unless (viper-is-in-minibuffer)
4043 (message "Inserted %d character(s), %d line(s)"
4044 chars-inserted lines-inserted))))
4045 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
4046 ;; newline; it leaves the cursor at the beginning when the text contains
4048 (if (viper-same-line (point) (mark))
4049 (or (= (point) (mark)) (viper-backward-char-carefully))
4050 (exchange-point-and-mark)
4052 (back-to-indentation)))
4053 (viper-deactivate-mark))
4055 (defun viper-Put-back (arg)
4056 "Put back at point/above line."
4058 (let ((val (viper-p-val arg))
4059 (text (if viper-use-register
4060 (cond ((viper-valid-register viper-use-register '(digit))
4062 (- viper-use-register ?1) 'do-not-rotate))
4063 ((viper-valid-register viper-use-register)
4064 (get-register (downcase viper-use-register)))
4065 (t (error viper-InvalidRegister viper-use-register)))
4067 sv-point chars-inserted lines-inserted)
4069 (if viper-use-register
4070 (let ((reg viper-use-register))
4071 (setq viper-use-register nil)
4072 (error viper-EmptyRegister reg))
4074 (setq viper-use-register nil)
4075 (if (viper-end-with-a-newline-p text) (beginning-of-line))
4076 (viper-set-destructive-command
4077 (list 'viper-Put-back val nil viper-use-register nil nil))
4078 (set-marker (viper-mark-marker) (point) (current-buffer))
4079 (setq sv-point (point))
4080 (viper-loop val (viper-yank text))
4081 (setq chars-inserted (abs (- (point) sv-point))
4082 lines-inserted (abs (count-lines (point) sv-point)))
4083 (if (or (> chars-inserted viper-change-notification-threshold)
4084 (> lines-inserted viper-change-notification-threshold))
4085 (unless (viper-is-in-minibuffer)
4086 (message "Inserted %d character(s), %d line(s)"
4087 chars-inserted lines-inserted))))
4088 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
4089 ;; newline; it leaves the cursor at the beginning when the text contains
4091 (if (viper-same-line (point) (mark))
4092 (or (= (point) (mark)) (viper-backward-char-carefully))
4093 (exchange-point-and-mark)
4095 (back-to-indentation)))
4096 (viper-deactivate-mark))
4099 ;; Copy region to kill-ring.
4100 ;; If BEG and END do not belong to the same buffer, copy empty region.
4101 (defun viper-copy-region-as-kill (beg end)
4103 (copy-region-as-kill beg end)
4104 (error (copy-region-as-kill beg beg))))
4107 (defun viper-delete-char (arg)
4108 "Delete next character."
4110 (let ((val (viper-p-val arg))
4112 (viper-set-destructive-command
4113 (list 'viper-delete-char val nil nil nil nil))
4114 (if (and viper-ex-style-editing
4115 (> val (viper-chars-in-region (point) (viper-line-pos 'end))))
4116 (setq val (viper-chars-in-region (point) (viper-line-pos 'end))))
4117 (if (and viper-ex-style-motion (eolp))
4118 (if (bolp) (error "") (setq val 0))) ; not bol---simply back 1 ch
4120 (viper-forward-char-carefully val)
4121 (setq end-del-pos (point)))
4122 (if viper-use-register
4124 (cond ((viper-valid-register viper-use-register '((Letter)))
4125 (viper-append-to-register
4126 (downcase viper-use-register) (point) end-del-pos))
4127 ((viper-valid-register viper-use-register)
4129 viper-use-register (point) end-del-pos nil))
4130 (t (error viper-InvalidRegister viper-use-register)))
4131 (setq viper-use-register nil)))
4134 (if viper-ex-style-motion
4135 (if (and (eolp) (not (bolp))) (backward-char 1)))
4138 (defun viper-delete-backward-char (arg)
4139 "Delete previous character. On reaching beginning of line, stop and beep."
4141 (let ((val (viper-p-val arg))
4143 (viper-set-destructive-command
4144 (list 'viper-delete-backward-char val nil nil nil nil))
4146 viper-ex-style-editing
4147 (> val (viper-chars-in-region (viper-line-pos 'start) (point))))
4148 (setq val (viper-chars-in-region (viper-line-pos 'start) (point))))
4150 (viper-backward-char-carefully val)
4151 (setq end-del-pos (point)))
4152 (if viper-use-register
4154 (cond ((viper-valid-register viper-use-register '(Letter))
4155 (viper-append-to-register
4156 (downcase viper-use-register) end-del-pos (point)))
4157 ((viper-valid-register viper-use-register)
4159 viper-use-register end-del-pos (point) nil))
4160 (t (error viper-InvalidRegister viper-use-register)))
4161 (setq viper-use-register nil)))
4162 (if (and (bolp) viper-ex-style-editing)
4164 (delete-backward-char val t)))
4167 (defun viper-del-backward-char-in-insert ()
4168 "Delete 1 char backwards while in insert mode."
4170 (if (and viper-ex-style-editing (bolp))
4172 ;; don't put on kill ring
4173 (delete-backward-char 1 nil)))
4176 (defun viper-del-backward-char-in-replace ()
4177 "Delete one character in replace mode.
4178 If `viper-delete-backwards-in-replace' is t, then DEL key actually deletes
4179 charecters. If it is nil, then the cursor just moves backwards, similarly
4180 to Vi. The variable `viper-ex-style-editing', if t, doesn't let the
4181 cursor move past the beginning of line."
4183 (cond (viper-delete-backwards-in-replace
4185 ;; don't put on kill ring
4186 (delete-backward-char 1 nil))
4187 (viper-ex-style-editing
4192 ;; don't put on kill ring
4193 (delete-backward-char 1 nil))))
4194 (viper-ex-style-editing
4199 (backward-char 1))))
4205 (defun viper-join-lines (arg)
4206 "Join this line to next, if ARG is nil. Otherwise, join ARG lines."
4208 (let ((val (viper-P-val arg)))
4209 (viper-set-destructive-command
4210 (list 'viper-join-lines val nil nil nil nil))
4211 (viper-loop (if (null val) 1 (1- val))
4216 (delete-region (point) (1- (point)))
4218 ;; fixup-whitespace sometimes does not leave space
4219 ;; between objects, so we insert it as in Vi
4220 (or (looking-at " ")
4228 (defun viper-change (beg end)
4229 (if (markerp beg) (setq beg (marker-position beg)))
4230 (if (markerp end) (setq end (marker-position end)))
4231 ;; beg is sometimes (mark t), which may be nil
4232 (or beg (setq beg end))
4234 (viper-set-complex-command-for-undo)
4235 (if viper-use-register
4237 (copy-to-register viper-use-register beg end nil)
4238 (setq viper-use-register nil)))
4239 (viper-set-replace-overlay beg end)
4240 (setq last-command nil) ; separate repl text from prev kills
4242 (if (= (viper-replace-start) (point-max))
4243 (error "End of buffer"))
4245 (setq viper-last-replace-region
4246 (buffer-substring (viper-replace-start)
4247 (viper-replace-end)))
4249 ;; protect against error while inserting "@" and other disasters
4250 ;; (e.g., read-only buff)
4251 (condition-case conds
4252 (if (or viper-allow-multiline-replace-regions
4253 (viper-same-line (viper-replace-start)
4254 (viper-replace-end)))
4256 ;; tabs cause problems in replace, so untabify
4257 (goto-char (viper-replace-end))
4258 (insert-before-markers "@") ; put placeholder after the TAB
4259 (untabify (viper-replace-start) (point))
4260 ;; del @, don't put on kill ring
4261 (delete-backward-char 1)
4263 (viper-set-replace-overlay-glyphs
4264 viper-replace-region-start-delimiter
4265 viper-replace-region-end-delimiter)
4266 ;; this move takes care of the last posn in the overlay, which
4267 ;; has to be shifted because of insert. We can't simply insert
4268 ;; "$" before-markers because then overlay-start will shift the
4269 ;; beginning of the overlay in case we are replacing a single
4270 ;; character. This fixes the bug with `s' and `cl' commands.
4271 (viper-move-replace-overlay (viper-replace-start) (point))
4272 (goto-char (viper-replace-start))
4273 (viper-change-state-to-replace t))
4274 (kill-region (viper-replace-start)
4275 (viper-replace-end))
4276 (viper-hide-replace-overlay)
4277 (viper-change-state-to-insert))
4278 (error ;; make sure that the overlay doesn't stay.
4279 ;; go back to the original point
4280 (goto-char (viper-replace-start))
4281 (viper-hide-replace-overlay)
4282 (viper-message-conditions conds))))
4285 (defun viper-change-subr (beg end)
4286 ;; beg is sometimes (mark t), which may be nil
4287 (or beg (setq beg end))
4288 (if viper-use-register
4290 (copy-to-register viper-use-register beg end nil)
4291 (setq viper-use-register nil)))
4292 (kill-region beg end)
4293 (setq this-command 'viper-change)
4294 (viper-yank-last-insertion))
4296 (defun viper-toggle-case (arg)
4297 "Toggle character case."
4299 (let ((val (viper-p-val arg)) (c))
4300 (viper-set-destructive-command
4301 (list 'viper-toggle-case val nil nil nil nil))
4303 (setq c (following-char))
4305 (if (eq c (upcase c))
4306 (insert-char (downcase c) 1)
4307 (insert-char (upcase c) 1))
4308 (if (eolp) (backward-char 1))
4309 (setq val (1- val)))))
4314 (defun viper-query-replace ()
4316 If a null string is suplied as the string to be replaced,
4317 the query replace mode will toggle between string replace
4318 and regexp replace."
4321 (setq str (viper-read-string-with-history
4322 (if viper-re-query-replace "Query replace regexp: "
4325 'viper-replace1-history
4326 (car viper-replace1-history) ; default
4328 (if (string= str "")
4330 (setq viper-re-query-replace (not viper-re-query-replace))
4331 (message "Query replace mode changed to %s"
4332 (if viper-re-query-replace "regexp replace"
4334 (if viper-re-query-replace
4335 (query-replace-regexp
4337 (viper-read-string-with-history
4338 (format "Query replace regexp `%s' with: " str)
4340 'viper-replace1-history
4341 (car viper-replace1-history) ; default
4345 (viper-read-string-with-history
4346 (format "Query replace `%s' with: " str)
4348 'viper-replace1-history
4349 (car viper-replace1-history) ; default
4355 (defun viper-mark-beginning-of-buffer ()
4356 "Mark beginning of buffer."
4359 (goto-char (point-min))
4360 (exchange-point-and-mark)
4361 (message "Mark set at the beginning of buffer"))
4363 (defun viper-mark-end-of-buffer ()
4364 "Mark end of buffer."
4367 (goto-char (point-max))
4368 (exchange-point-and-mark)
4369 (message "Mark set at the end of buffer"))
4371 (defun viper-mark-point ()
4372 "Set mark at point of buffer."
4374 (let ((char (read-char)))
4375 (cond ((and (<= ?a char) (<= char ?z))
4376 (point-to-register (viper-int-to-char (1+ (- char ?a)))))
4377 ((viper= char ?<) (viper-mark-beginning-of-buffer))
4378 ((viper= char ?>) (viper-mark-end-of-buffer))
4379 ((viper= char ?.) (viper-set-mark-if-necessary))
4380 ((viper= char ?,) (viper-cycle-through-mark-ring))
4381 ((viper= char ?^) (push-mark viper-saved-mark t t))
4382 ((viper= char ?D) (mark-defun))
4386 ;; Algorithm: If first invocation of this command save mark on ring, goto
4387 ;; mark, M0, and pop the most recent elt from the mark ring into mark,
4388 ;; making it into the new mark, M1.
4389 ;; Push this mark back and set mark to the original point position, p1.
4390 ;; So, if you hit '' or `` then you can return to p1.
4392 ;; If repeated command, pop top elt from the ring into mark and
4393 ;; jump there. This forgets the position, p1, and puts M1 back into mark.
4394 ;; Then we save the current pos, which is M0, jump to M1 and pop M2 from
4395 ;; the ring into mark. Push M2 back on the ring and set mark to M0.
4397 (defun viper-cycle-through-mark-ring ()
4398 "Visit previous locations on the mark ring.
4399 One can use `` and '' to temporarily jump 1 step back."
4400 (let* ((sv-pt (point)))
4401 ;; if repeated `m,' command, pop the previously saved mark.
4402 ;; Prev saved mark is actually prev saved point. It is used if the
4403 ;; user types `` or '' and is discarded
4404 ;; from the mark ring by the next `m,' command.
4405 ;; In any case, go to the previous or previously saved mark.
4406 ;; Then push the current mark (popped off the ring) and set current
4407 ;; point to be the mark. Current pt as mark is discarded by the next
4409 (if (eq last-command 'viper-cycle-through-mark-ring)
4411 ;; save current mark if the first iteration
4412 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4414 (push-mark (mark t) t)) )
4416 (set-mark-command 1)
4417 ;; don't duplicate mark on the ring
4418 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4420 (viper-deactivate-mark)
4421 (setq this-command 'viper-cycle-through-mark-ring)
4425 (defun viper-goto-mark (arg)
4428 (let ((char (read-char))
4429 (com (viper-getcom arg)))
4430 (viper-goto-mark-subr char com nil)))
4432 (defun viper-goto-mark-and-skip-white (arg)
4433 "Go to mark and skip to first non-white character on line."
4435 (let ((char (read-char))
4436 (com (viper-getCom arg)))
4437 (viper-goto-mark-subr char com t)))
4439 (defun viper-goto-mark-subr (char com skip-white)
4442 (error "Empty buffer")
4444 (cond ((viper-valid-register char '(letter))
4445 (let* ((buff (current-buffer))
4446 (reg (viper-int-to-char (1+ (- char ?a))))
4447 (text-marker (get-register reg)))
4448 ;; If marker points to file that had markers set (and those markers
4449 ;; were saved (as e.g., in session.el), then restore those markers
4450 (if (and (consp text-marker)
4451 (eq (car text-marker) 'file-query)
4452 (or (find-buffer-visiting (nth 1 text-marker))
4453 (y-or-n-p (format "Visit file %s again? "
4454 (nth 1 text-marker)))))
4456 (find-file (nth 1 text-marker))
4457 (when (and (<= (nth 2 text-marker) (point-max))
4458 (<= (point-min) (nth 2 text-marker)))
4459 (setq text-marker (copy-marker (nth 2 text-marker)))
4460 (set-register reg text-marker))))
4461 (if com (viper-move-marker-locally 'viper-com-point (point)))
4462 (if (not (viper-valid-marker text-marker))
4463 (error viper-EmptyTextmarker char))
4464 (if (and (viper-same-line (point) viper-last-jump)
4465 (= (point) viper-last-jump-ignore))
4466 (push-mark viper-last-jump t)
4467 (push-mark nil t)) ; no msg
4468 (viper-register-to-point reg)
4469 (setq viper-last-jump (point-marker))
4471 (back-to-indentation)
4472 (setq viper-last-jump-ignore (point))))
4474 (if (equal buff (current-buffer))
4475 (viper-execute-com (if skip-white
4476 'viper-goto-mark-and-skip-white
4479 (switch-to-buffer buff)
4480 (goto-char viper-com-point)
4481 (viper-change-state-to-vi)
4483 ((and (not skip-white) (viper= char ?`))
4484 (if com (viper-move-marker-locally 'viper-com-point (point)))
4485 (if (and (viper-same-line (point) viper-last-jump)
4486 (= (point) viper-last-jump-ignore))
4487 (goto-char viper-last-jump))
4488 (if (null (mark t)) (error "Mark is not set in this buffer"))
4489 (if (= (point) (mark t)) (pop-mark))
4490 (exchange-point-and-mark)
4491 (setq viper-last-jump (point-marker)
4492 viper-last-jump-ignore 0)
4493 (if com (viper-execute-com 'viper-goto-mark nil com)))
4494 ((and skip-white (viper= char ?'))
4495 (if com (viper-move-marker-locally 'viper-com-point (point)))
4496 (if (and (viper-same-line (point) viper-last-jump)
4497 (= (point) viper-last-jump-ignore))
4498 (goto-char viper-last-jump))
4499 (if (= (point) (mark t)) (pop-mark))
4500 (exchange-point-and-mark)
4501 (setq viper-last-jump (point))
4502 (back-to-indentation)
4503 (setq viper-last-jump-ignore (point))
4504 (if com (viper-execute-com 'viper-goto-mark-and-skip-white nil com)))
4505 (t (error viper-InvalidTextmarker char))))
4507 (defun viper-insert-tab ()
4511 (defun viper-exchange-point-and-mark ()
4513 (exchange-point-and-mark)
4514 (back-to-indentation))
4516 ;; Input Mode Indentation
4518 ;; Returns t, if the string before point matches the regexp STR.
4519 (defsubst viper-looking-back (str)
4520 (and (save-excursion (re-search-backward str nil t))
4521 (= (point) (match-end 0))))
4524 (defun viper-forward-indent ()
4525 "Indent forward -- `C-t' in Vi."
4528 (indent-to (+ (current-column) viper-shift-width)))
4530 (defun viper-backward-indent ()
4531 "Backtab, C-d in VI"
4534 (let ((p (point)) (c (current-column)) bol (indent t))
4535 (if (viper-looking-back "[0^]")
4537 (if (eq ?^ (preceding-char))
4538 (setq viper-preserve-indent t))
4539 (delete-backward-char 1)
4545 (if (re-search-backward "[^ \t]" bol 1) (forward-char))
4546 (delete-region (point) p)
4548 (indent-to (- c viper-shift-width)))
4549 (if (or (bolp) (viper-looking-back "[^ \t]"))
4550 (setq viper-cted nil)))))
4553 (defun viper-indent-line (col)
4554 (if viper-auto-indent
4557 (if (and viper-electric-mode
4558 (not (memq major-mode '(fundamental-mode
4560 paragraph-indent-text-mode))))
4561 (indent-according-to-mode)
4565 (defun viper-autoindent ()
4566 "Auto Indentation, Vi-style."
4568 (let ((col (current-indentation)))
4569 (if abbrev-mode (expand-abbrev))
4570 (if viper-preserve-indent
4571 (setq viper-preserve-indent nil)
4572 (setq viper-current-indent col))
4573 ;; don't leave whitespace lines around
4574 (if (memq last-command
4576 viper-open-line viper-Open-line
4577 viper-replace-state-exit-cmd))
4578 (indent-to-left-margin))
4579 ;; use \n instead of newline, or else <Return> will move the insert point
4582 (viper-indent-line viper-current-indent)
4586 ;; Viewing registers
4588 (defun viper-ket-function (arg)
4589 "Function called by \], the ket. View registers and call \]\]."
4591 (let ((reg (read-char)))
4592 (cond ((viper-valid-register reg '(letter Letter))
4593 (view-register (downcase reg)))
4594 ((viper-valid-register reg '(digit))
4595 (let ((text (current-kill (- reg ?1) 'do-not-rotate)))
4596 (with-output-to-temp-buffer " *viper-info*"
4597 (princ (format "Register %c contains the string:\n" reg))
4601 (viper-next-heading arg))
4603 viper-InvalidRegister reg)))))
4605 (defun viper-brac-function (arg)
4606 "Function called by \[, the brac. View textmarkers and call \[\["
4608 (let ((reg (read-char)))
4609 (cond ((viper= ?\[ reg)
4610 (viper-prev-heading arg))
4612 (viper-heading-end arg))
4613 ((viper-valid-register reg '(letter))
4614 (let* ((val (get-register (viper-int-to-char (1+ (- reg ?a)))))
4615 (buf (if (not (markerp val))
4616 (error viper-EmptyTextmarker reg)
4617 (marker-buffer val)))
4618 (pos (marker-position val))
4619 line-no text (s pos) (e pos))
4620 (with-output-to-temp-buffer " *viper-info*"
4625 (setq line-no (1+ (count-lines (point-min) val)))
4628 (if (re-search-backward "[^ \t]" nil t)
4634 (if (re-search-forward "[^ \t]" nil t)
4638 (setq text (buffer-substring s e))
4639 (setq text (format "%s<%c>%s"
4640 (substring text 0 (- pos s))
4641 reg (substring text (- pos s)))))
4644 "Textmarker `%c' is in buffer `%s' at line %d.\n"
4645 reg (buffer-name buf) line-no))
4646 (princ (format "Here is some text around %c:\n\n %s"
4648 (princ (format viper-EmptyTextmarker reg))))
4650 (t (error viper-InvalidTextmarker reg)))))
4654 (defun viper-delete-backward-word (arg)
4655 "Delete previous word."
4660 (delete-region (point) (mark t))
4665 ;; Get viper standard value of SYMBOL. If symbol is customized, get its
4666 ;; standard value. Otherwise, get the value saved in the alist STORAGE. If
4667 ;; STORAGE is nil, use viper-saved-user-settings.
4668 (defun viper-standard-value (symbol &optional storage)
4669 (or (eval (car (get symbol 'customized-value)))
4670 (eval (car (get symbol 'saved-value)))
4671 (nth 1 (assoc symbol (or storage viper-saved-user-settings)))))
4675 (defun viper-set-expert-level (&optional dont-change-unless)
4676 "Sets the expert level for a Viper user.
4677 Can be called interactively to change (temporarily or permanently) the
4678 current expert level.
4680 The optional argument DONT-CHANGE-UNLESS, if not nil, says that
4681 the level should not be changed, unless its current value is
4682 meaningless (i.e., not one of 1,2,3,4,5).
4684 User level determines the setting of Viper variables that are most
4685 sensitive for VI-style look-and-feel."
4689 (if (not (natnump viper-expert-level)) (setq viper-expert-level 0))
4691 (save-window-excursion
4692 (delete-other-windows)
4693 ;; if 0 < viper-expert-level < viper-max-expert-level
4694 ;; & dont-change-unless = t -- use it; else ask
4695 (viper-ask-level dont-change-unless))
4697 (setq viper-always t
4698 viper-ex-style-motion t
4699 viper-ex-style-editing t
4700 viper-want-ctl-h-help nil)
4702 (cond ((eq viper-expert-level 1) ; novice or beginner
4703 (global-set-key ; in emacs-state
4705 (if (viper-window-display-p) 'viper-iconify 'suspend-emacs))
4706 (setq viper-no-multiple-ESC t
4708 viper-vi-style-in-minibuffer t
4709 viper-search-wrap-around-t t
4710 viper-electric-mode nil
4711 viper-want-emacs-keys-in-vi nil
4712 viper-want-emacs-keys-in-insert nil))
4714 ((and (> viper-expert-level 1) (< viper-expert-level 5))
4715 ;; intermediate to guru
4716 (setq viper-no-multiple-ESC (if (viper-window-display-p)
4718 viper-electric-mode t
4719 viper-want-emacs-keys-in-vi t
4720 viper-want-emacs-keys-in-insert (> viper-expert-level 2))
4722 (if (eq viper-expert-level 4) ; respect user's ex-style motion
4723 ; and viper-no-multiple-ESC
4726 viper-ex-style-editing
4727 (viper-standard-value 'viper-ex-style-editing)
4728 viper-ex-style-motion
4729 (viper-standard-value 'viper-ex-style-motion))
4730 (setq viper-ex-style-motion
4731 (viper-standard-value 'viper-ex-style-motion)
4732 viper-ex-style-editing
4733 (viper-standard-value 'viper-ex-style-editing)
4735 (viper-standard-value 'viper-re-search)
4736 viper-no-multiple-ESC
4737 (viper-standard-value 'viper-no-multiple-ESC)))))
4740 ;; Ideally, if 5 is selected, a buffer should pop up to let the
4741 ;; user toggle the values of variables.
4742 (t (setq-default viper-ex-style-editing
4743 (viper-standard-value 'viper-ex-style-editing)
4744 viper-ex-style-motion
4745 (viper-standard-value 'viper-ex-style-motion))
4746 (setq viper-want-ctl-h-help
4747 (viper-standard-value 'viper-want-ctl-h-help)
4749 (viper-standard-value 'viper-always)
4750 viper-no-multiple-ESC
4751 (viper-standard-value 'viper-no-multiple-ESC)
4752 viper-ex-style-motion
4753 (viper-standard-value 'viper-ex-style-motion)
4754 viper-ex-style-editing
4755 (viper-standard-value 'viper-ex-style-editing)
4757 (viper-standard-value 'viper-re-search)
4759 (viper-standard-value 'viper-electric-mode)
4760 viper-want-emacs-keys-in-vi
4761 (viper-standard-value 'viper-want-emacs-keys-in-vi)
4762 viper-want-emacs-keys-in-insert
4763 (viper-standard-value 'viper-want-emacs-keys-in-insert))))
4765 (viper-set-mode-vars-for viper-current-state)
4766 (if (or viper-always
4767 (and (> viper-expert-level 0) (> 5 viper-expert-level)))
4771 ;; Ask user expert level.
4772 (defun viper-ask-level (dont-change-unless)
4773 (let ((ask-buffer " *viper-ask-level*")
4774 level-changed repeated)
4775 (save-window-excursion
4776 (switch-to-buffer ask-buffer)
4778 (while (or (> viper-expert-level viper-max-expert-level)
4779 (< viper-expert-level 1)
4780 (null dont-change-unless))
4784 (message "Invalid user level")
4787 (setq dont-change-unless t
4790 Please specify your level of familiarity with the venomous VI PERil
4791 \(and the VI Plan for Emacs Rescue).
4792 You can change it at any time by typing `M-x viper-set-expert-level RET'
4794 1 -- BEGINNER: Almost all Emacs features are suppressed.
4795 Feels almost like straight Vi. File name completion and
4796 command history in the minibuffer are thrown in as a bonus.
4797 To use Emacs productively, you must reach level 3 or higher.
4798 2 -- MASTER: C-c now has its standard Emacs meaning in Vi command state,
4799 so most Emacs commands can be used when Viper is in Vi state.
4800 Good progress---you are well on the way to level 3!
4801 3 -- GRAND MASTER: Like 2, but most Emacs commands are available also
4802 in Viper's insert state.
4803 4 -- GURU: Like 3, but user settings are respected for viper-no-multiple-ESC,
4804 viper-ex-style-motion, viper-ex-style-editing, and
4805 viper-re-search variables. Adjust these settings to your taste.
4806 5 -- WIZARD: Like 4, but user settings are also respected for viper-always,
4807 viper-electric-mode, viper-want-ctl-h-help, viper-want-emacs-keys-in-vi,
4808 and viper-want-emacs-keys-in-insert. Adjust these to your taste.
4810 Please, specify your level now: ")
4812 (setq viper-expert-level (- (viper-read-char-exclusive) ?0))
4815 ;; tell the user if level was changed
4819 (format "\n\n\n\n\n\t\tYou have selected user level %d"
4820 viper-expert-level))
4821 (if (y-or-n-p "Do you wish to make this change permanent? ")
4822 ;; save the setting for viper-expert-level
4825 (format "Saving user level %d ..." viper-expert-level)
4826 viper-custom-file-name))
4828 (bury-buffer) ; remove ask-buffer from screen
4838 ;; if ENFORCE-BUFFER is not nil, error if CHAR is a marker in another buffer
4839 (defun viper-register-to-point (char &optional enforce-buffer)
4840 "Like jump-to-register, but switches to another buffer in another window."
4841 (interactive "cViper register to point: ")
4842 (let ((val (get-register char)))
4844 ((and (fboundp 'frame-configuration-p)
4845 (frame-configuration-p val))
4846 (set-frame-configuration val))
4847 ((window-configuration-p val)
4848 (set-window-configuration val))
4849 ((viper-valid-marker val)
4850 (if (and enforce-buffer
4851 (not (equal (current-buffer) (marker-buffer val))))
4852 (error (concat viper-EmptyTextmarker " in this buffer")
4853 (viper-int-to-char (1- (+ char ?a)))))
4854 (pop-to-buffer (marker-buffer val))
4856 ((and (consp val) (eq (car val) 'file))
4857 (find-file (cdr val)))
4859 (error viper-EmptyTextmarker (viper-int-to-char (1- (+ char ?a))))))))
4862 (defun viper-save-kill-buffer ()
4863 "Save then kill current buffer."
4865 (if (< viper-expert-level 2)
4866 (save-buffers-kill-emacs)
4868 (kill-buffer (current-buffer))))
4874 (defun viper-submit-report ()
4875 "Submit bug report on Viper."
4877 (let ((reporter-prompt-for-summary-p t)
4878 (viper-device-type (viper-device-type))
4879 color-display-p frame-parameters
4880 minibuffer-emacs-face minibuffer-vi-face minibuffer-insert-face
4881 varlist salutation window-config)
4883 ;; If mode info is needed, add variable to `let' and then set it below,
4884 ;; like we did with color-display-p.
4885 (setq color-display-p (if (viper-window-display-p)
4886 (viper-color-display-p)
4888 minibuffer-vi-face (if (viper-has-face-support-p)
4889 (viper-get-face viper-minibuffer-vi-face)
4891 minibuffer-insert-face (if (viper-has-face-support-p)
4893 viper-minibuffer-insert-face)
4895 minibuffer-emacs-face (if (viper-has-face-support-p)
4897 viper-minibuffer-emacs-face)
4899 frame-parameters (if (fboundp 'frame-parameters)
4900 (frame-parameters (selected-frame))))
4902 (setq varlist (list 'viper-vi-minibuffer-minor-mode
4903 'viper-insert-minibuffer-minor-mode
4904 'viper-vi-intercept-minor-mode
4905 'viper-vi-local-user-minor-mode
4906 'viper-vi-kbd-minor-mode
4907 'viper-vi-global-user-minor-mode
4908 'viper-vi-state-modifier-minor-mode
4909 'viper-vi-diehard-minor-mode
4910 'viper-vi-basic-minor-mode
4911 'viper-replace-minor-mode
4912 'viper-insert-intercept-minor-mode
4913 'viper-insert-local-user-minor-mode
4914 'viper-insert-kbd-minor-mode
4915 'viper-insert-global-user-minor-mode
4916 'viper-insert-state-modifier-minor-mode
4917 'viper-insert-diehard-minor-mode
4918 'viper-insert-basic-minor-mode
4919 'viper-emacs-intercept-minor-mode
4920 'viper-emacs-local-user-minor-mode
4921 'viper-emacs-kbd-minor-mode
4922 'viper-emacs-global-user-minor-mode
4923 'viper-emacs-state-modifier-minor-mode
4924 'viper-automatic-iso-accents
4925 'viper-special-input-method
4926 'viper-want-emacs-keys-in-insert
4927 'viper-want-emacs-keys-in-vi
4928 'viper-keep-point-on-undo
4929 'viper-no-multiple-ESC
4930 'viper-electric-mode
4932 'viper-want-ctl-h-help
4933 'viper-ex-style-editing
4934 'viper-delete-backwards-in-replace
4935 'viper-vi-style-in-minibuffer
4936 'viper-vi-state-hook
4937 'viper-insert-state-hook
4938 'viper-replace-state-hook
4939 'viper-emacs-state-hook
4940 'ex-cycle-other-window
4941 'ex-cycle-through-non-files
4948 'minibuffer-insert-face
4949 'minibuffer-emacs-face
4952 Congratulations! You may have unearthed a bug in Viper!
4953 Please mail a concise, accurate summary of the problem to the address above.
4955 -------------------------------------------------------------------")
4956 (setq window-config (current-window-configuration))
4957 (with-output-to-temp-buffer " *viper-info*"
4958 (switch-to-buffer " *viper-info*")
4959 (delete-other-windows)
4961 PLEASE FOLLOW THESE PROCEDURES
4962 ------------------------------
4964 Before reporting a bug, please verify that it is related to Viper, and is
4965 not cause by other packages you are using.
4967 Don't report compilation warnings, unless you are certain that there is a
4968 problem. These warnings are normal and unavoidable.
4970 Please note that users should not modify variables and keymaps other than
4971 those advertised in the manual. Such `customization' is likely to crash
4972 Viper, as it would any other improperly customized Emacs package.
4974 If you are reporting an error message received while executing one of the
4975 Viper commands, type:
4977 M-x set-variable <Return> debug-on-error <Return> t <Return>
4979 Then reproduce the error. The above command will cause Emacs to produce a
4980 back trace of the execution that leads to the error. Please include this
4981 trace in your bug report.
4983 If you believe that one of Viper's commands goes into an infinite loop
4984 \(e.g., Emacs freezes\), type:
4986 M-x set-variable <Return> debug-on-quit <Return> t <Return>
4988 Then reproduce the problem. Wait for a few seconds, then type C-g to abort
4989 the current command. Include the resulting back trace in the bug report.
4991 Mail anyway (y or n)? ")
4992 (if (y-or-n-p "Mail anyway? ")
4994 (set-window-configuration window-config)
4995 (error "Bug report aborted")))
4998 (set-window-configuration window-config)
5000 (reporter-submit-bug-report "kifer@cs.stonybrook.edu"
5003 nil 'delete-other-windows
5010 ;; arch-tag: 739a6450-5fda-44d0-88b0-325053d888c2
5011 ;;; viper-cmd.el ends here